diff --git a/OAT.xml b/OAT.xml
index de3ce4e7..9f343b1a 100644
--- a/OAT.xml
+++ b/OAT.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Copyright (C) 2022 Huawei Device Co., Ltd.
-
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
diff --git a/frameworks/aafwk/include/accessible_ability_client_proxy.h b/frameworks/aafwk/include/accessible_ability_client_proxy.h
index 502831c7..7bf0c1e6 100644
--- a/frameworks/aafwk/include/accessible_ability_client_proxy.h
+++ b/frameworks/aafwk/include/accessible_ability_client_proxy.h
@@ -81,6 +81,17 @@ public:
     virtual void OnGestureSimulateResult(const int sequence, const bool completedSuccessfully) override;
 
 private:
+    /**
+     * @brief Send the command data from proxy to stub in IPC mechanism.
+     * @param code The code matched the function called.
+     * @param data Serializable data
+     * @param reply The response of IPC
+     * @param option The option parameter of IPC,such as: async,sync
+     * @return true: Write the descriptor successfully; otherwise is not.
+     */
+    bool SendTransactCmd(IAccessibleAbilityClient::Message code, MessageParcel &data,
+        MessageParcel &reply,  MessageOption &option);
+
     bool WriteInterfaceToken(MessageParcel &data);
 
     static inline BrokerDelegator<AccessibleAbilityClientProxy> delegator;
diff --git a/frameworks/aafwk/src/accessibility_extension_context.cpp b/frameworks/aafwk/src/accessibility_extension_context.cpp
index ed8b3a2d..aaff41c5 100644
--- a/frameworks/aafwk/src/accessibility_extension_context.cpp
+++ b/frameworks/aafwk/src/accessibility_extension_context.cpp
@@ -29,7 +29,7 @@ bool AccessibilityExtensionContext::GetFocusElementInfo(
 {
     HILOG_DEBUG("start.");
     if ((focusType != FOCUS_TYPE_INPUT) && (focusType != FOCUS_TYPE_ACCESSIBILITY)) {
-        HILOG_DEBUG("focusType is not allowed.");
+        HILOG_ERROR("focusType is not allowed.");
         return false;
     }
 
diff --git a/frameworks/aafwk/src/accessible_ability_client_proxy.cpp b/frameworks/aafwk/src/accessible_ability_client_proxy.cpp
index b8cc76f5..db624a3f 100644
--- a/frameworks/aafwk/src/accessible_ability_client_proxy.cpp
+++ b/frameworks/aafwk/src/accessible_ability_client_proxy.cpp
@@ -34,9 +34,26 @@ bool AccessibleAbilityClientProxy::WriteInterfaceToken(MessageParcel &data)
     return true;
 }
 
+bool AccessibleAbilityClientProxy::SendTransactCmd(IAccessibleAbilityClient::Message code, MessageParcel &data,
+    MessageParcel &reply,  MessageOption &option)
+{
+    HILOG_DEBUG("start.");
+
+    sptr<IRemoteObject> remote = Remote();
+    if (!remote) {
+        HILOG_ERROR("fail to send transact cmd %{public}d due to remote object", code);
+        return false;
+    }
+    int32_t result = remote->SendRequest(static_cast<uint32_t>(code), data, reply, option);
+    if (result != NO_ERROR) {
+        HILOG_ERROR("receive error transact code %{public}d in transact cmd %{public}d", result, code);
+        return false;
+    }
+    return true;
+}
+
 void AccessibleAbilityClientProxy::Init(const sptr<IAccessibleAbilityChannel> &channel, const int channelId)
 {
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -60,15 +77,14 @@ void AccessibleAbilityClientProxy::Init(const sptr<IAccessibleAbilityChannel> &c
         return;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>(IAccessibleAbilityClient::Message::INIT), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Init fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibleAbilityClient::Message::INIT, data, reply, option)) {
+        HILOG_ERROR("Init fail");
+        return;
     }
 }
 
 void AccessibleAbilityClientProxy::Disconnect(const int channelId)
 {
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -84,16 +100,14 @@ void AccessibleAbilityClientProxy::Disconnect(const int channelId)
         return;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>(IAccessibleAbilityClient::Message::DISCONNECT),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Disconnect fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibleAbilityClient::Message::DISCONNECT, data, reply, option)) {
+        HILOG_ERROR("Disconnect fail");
+        return;
     }
 }
 
 void AccessibleAbilityClientProxy::OnAccessibilityEvent(const AccessibilityEventInfo &eventInfo)
 {
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -107,16 +121,14 @@ void AccessibleAbilityClientProxy::OnAccessibilityEvent(const AccessibilityEvent
         HILOG_ERROR("fail, eventInfo write parcelable error");
         return;
     }
-    error = Remote()->SendRequest(static_cast<uint32_t>(IAccessibleAbilityClient::Message::ON_ACCESSIBILITY_EVENT),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("OnAccessibilityEvent fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibleAbilityClient::Message::ON_ACCESSIBILITY_EVENT, data, reply, option)) {
+        HILOG_ERROR("OnAccessibilityEvent fail");
+        return;
     }
 }
 
 void AccessibleAbilityClientProxy::OnKeyPressEvent(const MMI::KeyEvent &keyEvent, const int sequence)
 {
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -136,17 +148,15 @@ void AccessibleAbilityClientProxy::OnKeyPressEvent(const MMI::KeyEvent &keyEvent
         return;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>(IAccessibleAbilityClient::Message::ON_KEY_PRESS_EVENT),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("OnKeyPressEvent fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibleAbilityClient::Message::ON_KEY_PRESS_EVENT, data, reply, option)) {
+        HILOG_ERROR("OnKeyPressEvent fail");
+        return;
     }
 }
 
 void AccessibleAbilityClientProxy::OnDisplayResized(const int displayId, const Rect &rect, const float scale,
     const float centerX, const float centerY)
 {
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -177,16 +187,14 @@ void AccessibleAbilityClientProxy::OnDisplayResized(const int displayId, const R
         return;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>(IAccessibleAbilityClient::Message::ON_DISPALYRESIZE_CHANGED),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("OnDisplayResized fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibleAbilityClient::Message::ON_DISPALYRESIZE_CHANGED, data, reply, option)) {
+        HILOG_ERROR("OnDisplayResized fail");
+        return;
     }
 }
 
 void AccessibleAbilityClientProxy::OnGestureSimulateResult(const int sequence, const bool completedSuccessfully)
 {
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -204,10 +212,10 @@ void AccessibleAbilityClientProxy::OnGestureSimulateResult(const int sequence, c
         HILOG_ERROR("fail, completedSuccessfully write bool error");
         return;
     }
-    error = Remote()->SendRequest(static_cast<uint32_t>(IAccessibleAbilityClient::Message::ON_GESTURE_SIMULATE_RESULT),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("OnGestureSimulateResult fail, error: %d", error);
+
+    if (!SendTransactCmd(IAccessibleAbilityClient::Message::ON_GESTURE_SIMULATE_RESULT, data, reply, option)) {
+        HILOG_ERROR("OnGestureSimulateResult fail");
+        return;
     }
 }
 } // namespace Accessibility
diff --git a/frameworks/aafwk/src/accessible_ability_client_stub.cpp b/frameworks/aafwk/src/accessible_ability_client_stub.cpp
index 06943d01..e6beb2f2 100644
--- a/frameworks/aafwk/src/accessible_ability_client_stub.cpp
+++ b/frameworks/aafwk/src/accessible_ability_client_stub.cpp
@@ -48,7 +48,7 @@ int AccessibleAbilityClientStub::OnRemoteRequest(uint32_t code,
     std::u16string descriptor = AccessibleAbilityClientStub::GetDescriptor();
     std::u16string remoteDescriptor = data.ReadInterfaceToken();
     if (descriptor != remoteDescriptor) {
-        HILOG_INFO("local descriptor is not equal to remote");
+        HILOG_ERROR("local descriptor is not equal to remote");
         return ERR_INVALID_STATE;
     }
 
diff --git a/frameworks/aafwk/src/accessible_ability_client_stub_impl.cpp b/frameworks/aafwk/src/accessible_ability_client_stub_impl.cpp
index f804f3ff..2aa65cb1 100644
--- a/frameworks/aafwk/src/accessible_ability_client_stub_impl.cpp
+++ b/frameworks/aafwk/src/accessible_ability_client_stub_impl.cpp
@@ -102,10 +102,10 @@ void AccessibleAbilityClientStubImpl::Init(const sptr<IAccessibleAbilityChannel>
             deathRecipient_ = new AccessibleAbilityDeathRecipient(channelId_, channel_);
         }
 
-        auto object = channel_->AsObject();
-        if (object) {
+        auto uiTestObject = channel_->AsObject();
+        if (uiTestObject) {
             HILOG_DEBUG("Add death recipient");
-            object->AddDeathRecipient(deathRecipient_);
+            uiTestObject->AddDeathRecipient(deathRecipient_);
         }
 
         uiTestListener_->OnAbilityConnected();
@@ -134,8 +134,10 @@ void AccessibleAbilityClientStubImpl::Disconnect(const int channelId)
         }
     } else {
         AccessibilityUITestAbility::GetInstance()->SetChannelId(channelId_);
-        uiTestListener_->OnAbilityDisconnected();
-        uiTestListener_ = nullptr;
+        if (uiTestListener_) {
+            uiTestListener_->OnAbilityDisconnected();
+            uiTestListener_ = nullptr;
+        }
     }
 }
 
@@ -163,8 +165,8 @@ void AccessibleAbilityClientStubImpl::OnKeyPressEvent(const MMI::KeyEvent &keyEv
 
     if (uiTestListener_) {
         std::shared_ptr<MMI::KeyEvent> tmp = std::make_shared<MMI::KeyEvent>(keyEvent);
-        bool handled = uiTestListener_->OnKeyPressEvent(tmp, sequence);
-        AccessibilityOperator::GetInstance().SetOnKeyPressEventResult(channelId_, handled, sequence);
+        bool uiTestHandled = uiTestListener_->OnKeyPressEvent(tmp, sequence);
+        AccessibilityOperator::GetInstance().SetOnKeyPressEventResult(channelId_, uiTestHandled, sequence);
     }
 }
 
@@ -214,7 +216,7 @@ void AccessibleAbilityClientStubImpl::AccessibleAbilityDeathRecipient::OnRemoteD
         return;
     }
 
-    if (!recipientchannel_ && (recipientchannel_->AsObject() != remote)) {
+    if (!recipientchannel_ || (recipientchannel_->AsObject() != remote)) {
         HILOG_ERROR("recipientchannel_ is nullptr or remote is wrong.");
         return;
     }
diff --git a/frameworks/aafwk/src/display_resize_controller.cpp b/frameworks/aafwk/src/display_resize_controller.cpp
index 2ebbcd25..ced3a6a5 100644
--- a/frameworks/aafwk/src/display_resize_controller.cpp
+++ b/frameworks/aafwk/src/display_resize_controller.cpp
@@ -109,7 +109,9 @@ void DisplayResizeController::DispatchOnDisplayResized(const Rect& rect,
 {
     HILOG_DEBUG("start.");
     for (auto listener : displayResizeListeners_) {
-        listener->OnDisplayResized(*this, rect, scale, centerX, centerY);
+        if (listener) {
+            listener->OnDisplayResized(*this, rect, scale, centerX, centerY);
+        }
     }
 }
 } // namespace Accessibility
diff --git a/frameworks/aafwk/src/js_accessibility_extension.cpp b/frameworks/aafwk/src/js_accessibility_extension.cpp
index 32ca9f65..6c18190f 100644
--- a/frameworks/aafwk/src/js_accessibility_extension.cpp
+++ b/frameworks/aafwk/src/js_accessibility_extension.cpp
@@ -41,8 +41,7 @@ JsAccessibilityExtension::~JsAccessibilityExtension() = default;
 
 void JsAccessibilityExtension::Init(const std::shared_ptr<AppExecFwk::AbilityLocalRecord> &record,
     const std::shared_ptr<AppExecFwk::OHOSApplication> &application,
-    std::shared_ptr<AppExecFwk::AbilityHandler> &handler,
-    const sptr<IRemoteObject> &token)
+    std::shared_ptr<AppExecFwk::AbilityHandler> &handler, const sptr<IRemoteObject> &token)
 {
     HILOG_INFO("JsAccessibilityExtension::Init begin.");
     AccessibilityExtension::Init(record, application, handler, token);
@@ -53,10 +52,13 @@ void JsAccessibilityExtension::Init(const std::shared_ptr<AppExecFwk::AbilityLoc
         return;
     }
 
+    if (!abilityInfo_) {
+        HILOG_ERROR("abilityInfo_ is nullptr.");
+        return;
+    }
     std::string moduleName(Extension::abilityInfo_->moduleName);
     moduleName.append("::").append(abilityInfo_->name);
-    HILOG_INFO("JsAccessibilityExtension::Init moduleName:%{public}s, srcPath:%{public}s.",
-        moduleName.c_str(), srcPath.c_str());
+    HILOG_INFO("moduleName:%{public}s, srcPath:%{public}s.", moduleName.c_str(), srcPath.c_str());
     HandleScope handleScope(jsRuntime_);
     auto& engine = jsRuntime_.GetNativeEngine();
 
@@ -65,7 +67,6 @@ void JsAccessibilityExtension::Init(const std::shared_ptr<AppExecFwk::AbilityLoc
         HILOG_ERROR("Failed to get jsObj_");
         return;
     }
-    HILOG_INFO("JsAccessibilityExtension::Init ConvertNativeValueTo.");
     NativeObject* obj = ConvertNativeValueTo<NativeObject>(jsObj_->Get());
     if (!obj) {
         HILOG_ERROR("Failed to get JsAccessibilityExtension object");
@@ -77,13 +78,14 @@ void JsAccessibilityExtension::Init(const std::shared_ptr<AppExecFwk::AbilityLoc
         HILOG_ERROR("Failed to get context");
         return;
     }
-    HILOG_INFO("JsAccessibilityExtension::Init CreateJsAccessibilityExtensionContext.");
     NativeValue* contextObj = CreateJsAccessibilityExtensionContext(engine, context);
     auto shellContextRef = jsRuntime_.LoadSystemModule("application.AccessibilityExtensionContext", &contextObj, 1);
+    if (!shellContextRef) {
+        HILOG_ERROR("shellContextRef is nullptr.");
+        return;
+    }
     contextObj = shellContextRef->Get();
-    HILOG_INFO("JsAccessibilityExtension::Init Bind.");
     context->Bind(jsRuntime_, shellContextRef.release());
-    HILOG_INFO("JsAccessibilityExtension::SetProperty.");
     obj->SetProperty("context", contextObj);
 
     auto nativeObj = ConvertNativeValueTo<NativeObject>(contextObj);
@@ -91,16 +93,10 @@ void JsAccessibilityExtension::Init(const std::shared_ptr<AppExecFwk::AbilityLoc
         HILOG_ERROR("Failed to get accessibility extension native object");
         return;
     }
-
-    HILOG_INFO("Set accessibility extension context pointer: %{public}p", context.get());
-
     nativeObj->SetNativePointer(new std::weak_ptr<AbilityRuntime::Context>(context),
         [](NativeEngine*, void* data, void*) {
-            HILOG_INFO("Finalizer for weak_ptr accessibility extension context is called");
             delete static_cast<std::weak_ptr<AbilityRuntime::Context>*>(data);
         }, nullptr);
-
-    HILOG_INFO("JsAccessibilityExtension::Init end.");
 }
 
 sptr<IRemoteObject> JsAccessibilityExtension::OnConnect(const AAFwk::Want &want)
@@ -182,7 +178,7 @@ NativeValue* JsAccessibilityExtension::CallObjectMethod(const char* name, Native
 {
     HILOG_INFO("JsAccessibilityExtension::CallObjectMethod(%{public}s), begin", name);
     if (!jsObj_) {
-        HILOG_WARN("jsObj_ is nullptr");
+        HILOG_ERROR("jsObj_ is nullptr");
         return nullptr;
     }
 
@@ -207,6 +203,10 @@ NativeValue* JsAccessibilityExtension::CallObjectMethod(const char* name, Native
 
 void JsAccessibilityExtension::GetSrcPath(std::string &srcPath)
 {
+    if (!Extension::abilityInfo_) {
+        HILOG_ERROR("abilityInfo_ is nullptr");
+        return;
+    }
     if (!Extension::abilityInfo_->isModuleJson) {
         /* temporary compatibility api8 + config.json */
         srcPath.append(Extension::abilityInfo_->package);
diff --git a/frameworks/aafwk/src/js_accessibility_extension_context.cpp b/frameworks/aafwk/src/js_accessibility_extension_context.cpp
index 6f6c3f7e..059fc0a1 100644
--- a/frameworks/aafwk/src/js_accessibility_extension_context.cpp
+++ b/frameworks/aafwk/src/js_accessibility_extension_context.cpp
@@ -104,7 +104,7 @@ private:
                 HILOG_INFO("GetFocusElementInfo begin");
                 auto context = weak.lock();
                 if (!context) {
-                    HILOG_WARN("context is released");
+                    HILOG_ERROR("context is released");
                     task.Reject(engine, CreateJsError(engine, ERROR_CODE_ONE, "Context is released"));
                     return;
                 }
@@ -121,8 +121,8 @@ private:
                     NativeValue* nativeElementInfo = reinterpret_cast<NativeValue*>(napiElementInfo);
                     task.Resolve(engine, nativeElementInfo);
                 } else {
-                    HILOG_ERROR("Get focus elementInfo failed.\
-                        ret: %{public}d, elementInfo.has_value(): %{public}d", ret, elementInfo.has_value());
+                    HILOG_ERROR("Get focus elementInfo failed. ret: %{public}d, elementInfo.has_value(): %{public}d",
+                        ret, elementInfo.has_value());
                     task.Reject(engine, CreateJsError(engine, false, "Get focus elementInfo failed."));
                 }
             };
@@ -148,7 +148,7 @@ private:
                 HILOG_INFO("GetRootElementInfo begin");
                 auto context = weak.lock();
                 if (!context) {
-                    HILOG_WARN("context is released");
+                    HILOG_ERROR("context is released");
                     task.Reject(engine, CreateJsError(engine, ERROR_CODE_ONE, "Context is released"));
                     return;
                 }
@@ -193,7 +193,7 @@ private:
                 HILOG_INFO("GetWindows begin");
                 auto context = weak.lock();
                 if (!context) {
-                    HILOG_WARN("context is released");
+                    HILOG_ERROR("context is released");
                     task.Reject(engine, CreateJsError(engine, ERROR_CODE_ONE, "Context is released"));
                     return;
                 }
@@ -247,7 +247,7 @@ private:
                 HILOG_INFO("ExecuteCommonAction begin");
                 auto context = weak.lock();
                 if (!context) {
-                    HILOG_WARN("context is released");
+                    HILOG_ERROR("context is released");
                     task.Reject(engine, CreateJsError(engine, ERROR_CODE_ONE, "Context is released"));
                     return;
                 }
@@ -304,7 +304,7 @@ private:
                 HILOG_INFO("GestureSimulate begin");
                 auto context = weak.lock();
                 if (!context) {
-                    HILOG_WARN("context is released");
+                    HILOG_ERROR("context is released");
                     task.Reject(engine, CreateJsError(engine, ERROR_CODE_ONE, "Context is released"));
                     return;
                 }
@@ -336,6 +336,10 @@ NativeValue* CreateJsAccessibilityExtensionContext(
 
     std::unique_ptr<JsAccessibilityExtensionContext> jsContext =
         std::make_unique<JsAccessibilityExtensionContext>(context);
+    if (!object) {
+        HILOG_ERROR("object is nullptr.");
+        return nullptr;
+    }
     object->SetNativePointer(jsContext.release(), JsAccessibilityExtensionContext::Finalizer, nullptr);
 
     BindNativeFunction(engine, *object, "getFocusElementInfo", JsAccessibilityExtensionContext::GetFocusElementInfo);
diff --git a/frameworks/aafwk/test/mock/mock_accessibility_window_info.cpp b/frameworks/aafwk/test/mock/mock_accessibility_window_info.cpp
index d567a76a..740b4d73 100644
--- a/frameworks/aafwk/test/mock/mock_accessibility_window_info.cpp
+++ b/frameworks/aafwk/test/mock/mock_accessibility_window_info.cpp
@@ -74,7 +74,9 @@ bool AccessibilityWindowInfo::GetRootAccessibilityInfo(AccessibilityElementInfo
 }
 
 void AccessibilityWindowInfo::SetAnchorId(const int anchorId)
-{}
+{
+    (void)anchorId;
+}
 
 bool AccessibilityWindowInfo::GetAnchor(AccessibilityElementInfo &elementInfo)
 {
diff --git a/frameworks/aafwk/test/mock/mock_accessible_ability_channel_stub.h b/frameworks/aafwk/test/mock/mock_accessible_ability_channel_stub.h
index 2584718c..39e2ad5b 100644
--- a/frameworks/aafwk/test/mock/mock_accessible_ability_channel_stub.h
+++ b/frameworks/aafwk/test/mock/mock_accessible_ability_channel_stub.h
@@ -36,6 +36,11 @@ public:
         const long elementId, const int requestId, const sptr<IAccessibilityElementOperatorCallback> &callback,
         const int mode)
     {
+        (void)accessibilityWindowId;
+        (void)elementId;
+        (void)requestId;
+        (void)callback;
+        (void)mode;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock SearchElementInfoByAccessibilityId";
         return true;
     }
@@ -43,6 +48,11 @@ public:
     virtual bool SearchElementInfosByText(const int accessibilityWindowId, const long elementId,
         const std::string &text, const int requestId, const sptr<IAccessibilityElementOperatorCallback> &callback)
     {
+        (void)accessibilityWindowId;
+        (void)elementId;
+        (void)text;
+        (void)requestId;
+        (void)callback;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock SearchElementInfosByText";
         return true;
     }
@@ -50,6 +60,11 @@ public:
     virtual bool FindFocusedElementInfo(const int accessibilityWindowId, const long elementId,
         const int focusType, const int requestId, const sptr<IAccessibilityElementOperatorCallback> &callback)
     {
+        (void)accessibilityWindowId;
+        (void)elementId;
+        (void)focusType;
+        (void)requestId;
+        (void)callback;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock FindFocusedElementInfo";
         return true;
     }
@@ -57,6 +72,11 @@ public:
     virtual bool FocusMoveSearch(const int accessibilityWindowId, const long elementId,
         const int direction, const int requestId, const sptr<IAccessibilityElementOperatorCallback> &callback)
     {
+        (void)accessibilityWindowId;
+        (void)elementId;
+        (void)direction;
+        (void)requestId;
+        (void)callback;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock FocusMoveSearch";
         return true;
     }
@@ -65,6 +85,12 @@ public:
         std::map<std::string, std::string> &actionArguments, const int requestId,
         const sptr<IAccessibilityElementOperatorCallback> &callback)
     {
+        (void)accessibilityWindowId;
+        (void)elementId;
+        (void)action;
+        (void)actionArguments;
+        (void)requestId;
+        (void)callback;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock ExecuteAction";
         return true;
     }
@@ -78,35 +104,42 @@ public:
 
     virtual bool ExecuteCommonAction(const int action)
     {
+        (void)action;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock ExecuteCommonAction";
         return true;
     }
 
     virtual void SetOnKeyPressEventResult(const bool handled, const int sequence)
     {
+        (void)handled;
+        (void)sequence;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock SetOnKeyPressEventResult";
     }
 
     virtual float GetDisplayResizeScale(const int displayId)
     {
+        (void)displayId;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock GetDisplayResizeScale";
         return 0;
     }
 
     virtual float GetDisplayResizeCenterX(const int displayId)
     {
+        (void)displayId;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock GetDisplayResizeCenterX";
         return 0;
     }
 
     virtual float GetDisplayResizeCenterY(const int displayId)
     {
+        (void)displayId;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock GetDisplayResizeCenterY";
         return 0;
     }
 
     virtual Rect GetDisplayResizeRect(const int displayId)
     {
+        (void)displayId;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock GetDisplayResizeRect";
         Rect rect {};
         return rect;
@@ -114,6 +147,8 @@ public:
 
     virtual bool ResetDisplayResize(const int displayId, const bool animate)
     {
+        (void)displayId;
+        (void)animate;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock ResetDisplayResize";
         return true;
     }
@@ -121,12 +156,19 @@ public:
     virtual bool SetDisplayResizeScaleAndCenter(const int displayId, const float scale, const float centerX,
         const float centerY, const bool animate)
     {
+        (void)displayId;
+        (void)scale;
+        (void)centerX;
+        (void)centerY;
+        (void)animate;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock SetDisplayResizeScaleAndCenter";
         return true;
     }
 
     virtual void SendSimulateGesture(const int requestId, const std::vector<GesturePathDefine> &gestureSteps)
     {
+        (void)requestId;
+        (void)gestureSteps;
         GTEST_LOG_(INFO) << "MOCK AccessibleAbilityChannelStubMock SendSimulateGesture";
     }
 };
diff --git a/frameworks/asacfwk/include/accessibility_element_operator_callback_proxy.h b/frameworks/asacfwk/include/accessibility_element_operator_callback_proxy.h
index c6e380a7..20ee8651 100644
--- a/frameworks/asacfwk/include/accessibility_element_operator_callback_proxy.h
+++ b/frameworks/asacfwk/include/accessibility_element_operator_callback_proxy.h
@@ -94,6 +94,17 @@ private:
      */
     bool WriteInterfaceToken(MessageParcel &data);
 
+    /**
+     * @brief Send the command data from proxy to stub in IPC mechanism.
+     * @param code The code matched the function called.
+     * @param data Serializable data
+     * @param reply The response of IPC
+     * @param option The option parameter of IPC,such as: async,sync
+     * @return true: Write the descriptor successfully; otherwise is not.
+     */
+    bool SendTransactCmd(IAccessibilityElementOperatorCallback::Message code, MessageParcel &data,
+        MessageParcel &reply,  MessageOption &option);
+
     /**
      * @brief Write the serializable data
      * @param parcelableVector The communication data of IPC
diff --git a/frameworks/asacfwk/include/accessibility_element_operator_proxy.h b/frameworks/asacfwk/include/accessibility_element_operator_proxy.h
index 38d9e2bf..58dc2176 100644
--- a/frameworks/asacfwk/include/accessibility_element_operator_proxy.h
+++ b/frameworks/asacfwk/include/accessibility_element_operator_proxy.h
@@ -145,6 +145,17 @@ private:
      * @return true: Write the descriptor successfully; otherwise is not.
      */
     bool WriteInterfaceToken(MessageParcel &data);
+
+    /**
+     * @brief Send the command data from proxy to stub in IPC mechanism.
+     * @param code The code matched the function called.
+     * @param data Serializable data
+     * @param reply The response of IPC
+     * @param option The option parameter of IPC,such as: async,sync
+     * @return true: Write the descriptor successfully; otherwise is not.
+     */
+    bool SendTransactCmd(IAccessibilityElementOperator::Message code, MessageParcel &data,
+        MessageParcel &reply,  MessageOption &option);
     static inline BrokerDelegator<AccessibilityElementOperatorProxy> delegator;
 };
 } // namespace Accessibility
diff --git a/frameworks/asacfwk/include/accessible_ability_manager_service_proxy.h b/frameworks/asacfwk/include/accessible_ability_manager_service_proxy.h
index ebcebb33..7be07ee2 100644
--- a/frameworks/asacfwk/include/accessible_ability_manager_service_proxy.h
+++ b/frameworks/asacfwk/include/accessible_ability_manager_service_proxy.h
@@ -132,6 +132,17 @@ private:
      * @return true: Write the descriptor successfully; otherwise is not.
      */
     bool WriteInterfaceToken(MessageParcel& data);
+
+    /**
+     * @brief Send the command data from proxy to stub in IPC mechanism.
+     * @param code The code matched the function called.
+     * @param data Serializable data
+     * @param reply The response of IPC
+     * @param option The option parameter of IPC,such as: async,sync
+     * @return true: Write the descriptor successfully; otherwise is not.
+     */
+    bool SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message code, MessageParcel &data,
+        MessageParcel &reply,  MessageOption &option);
     static inline BrokerDelegator<AccessibleAbilityManagerServiceClientProxy> delegator;
 };
 } // namespace Accessibility
diff --git a/frameworks/asacfwk/src/accessibility_element_info.cpp b/frameworks/asacfwk/src/accessibility_element_info.cpp
index 998d2320..61637852 100644
--- a/frameworks/asacfwk/src/accessibility_element_info.cpp
+++ b/frameworks/asacfwk/src/accessibility_element_info.cpp
@@ -216,8 +216,8 @@ void AccessibilityElementInfo::SetComponentId(const int componentId)
 
 bool AccessibilityElementInfo::GetFocus(const int focus, AccessibilityElementInfo &elementInfo)
 {
-    HILOG_INFO("channelId_[%{public}d], windowId_[%{public}d],\
-        elementId_[%{public}d], focus[%{public}d]", channelId_, windowId_, elementId_, focus);
+    HILOG_INFO("channelId_[%{public}d], windowId_[%{public}d], elementId_[%{public}d], focus[%{public}d]",
+        channelId_, windowId_, elementId_, focus);
     AccessibilityOperator *instance = &AccessibilityOperator::GetInstance();
     bool result = false;
     if (instance != nullptr) {
@@ -230,8 +230,8 @@ bool AccessibilityElementInfo::GetFocus(const int focus, AccessibilityElementInf
 
 bool AccessibilityElementInfo::GetNext(const FocusMoveDirection direction, AccessibilityElementInfo &elementInfo)
 {
-    HILOG_INFO("channelId_[%{public}d], windowId_[%{public}d],\
-        elementId_[%{public}d], direction[%{public}d]", channelId_, windowId_, elementId_, direction);
+    HILOG_INFO("channelId_[%{public}d], windowId_[%{public}d], elementId_[%{public}d], direction[%{public}d]",
+        channelId_, windowId_, elementId_, direction);
     AccessibilityOperator *instance = &AccessibilityOperator::GetInstance();
     bool result = false;
     if (instance != nullptr) {
@@ -383,7 +383,7 @@ bool AccessibilityElementInfo::ExecuteAction(const ActionType &action,
         return instance->ExecuteAction(channelId_, windowId_, elementId_, action,
             const_cast<std::map<std::string, std::string> &>(actionArguments));
     } else {
-        HILOG_INFO("Can't get AccessibilityOperator instance");
+        HILOG_ERROR("Can't get AccessibilityOperator instance");
         return false;
     }
 }
@@ -391,8 +391,8 @@ bool AccessibilityElementInfo::ExecuteAction(const ActionType &action,
 bool AccessibilityElementInfo::GetByContent(const std::string &text,
     std::vector<AccessibilityElementInfo> &elementInfos)
 {
-    HILOG_INFO("called channelId_[%{public}d], windowId_[%{public}d],\
-        elementId_[%{public}d], text[%{public}s]", channelId_, windowId_, elementId_, text.c_str());
+    HILOG_INFO("called channelId_[%{public}d], windowId_[%{public}d], elementId_[%{public}d], text[%{public}s]",
+        channelId_, windowId_, elementId_, text.c_str());
     AccessibilityOperator *instance = &AccessibilityOperator::GetInstance();
     bool result = false;
     if (instance != nullptr) {
@@ -447,7 +447,7 @@ bool AccessibilityElementInfo::GetParent(AccessibilityElementInfo &elementInfo)
             elementInfo = elementInfos.front();
         }
     } else {
-        HILOG_INFO("Can't get AccessibilityOperator instance");
+        HILOG_ERROR("Can't get AccessibilityOperator instance");
     }
     return result;
 }
diff --git a/frameworks/asacfwk/src/accessibility_element_operator_async_mng.cpp b/frameworks/asacfwk/src/accessibility_element_operator_async_mng.cpp
index 9fc213fd..0585b356 100644
--- a/frameworks/asacfwk/src/accessibility_element_operator_async_mng.cpp
+++ b/frameworks/asacfwk/src/accessibility_element_operator_async_mng.cpp
@@ -38,6 +38,10 @@ bool AccessibilityElementAsyncOperatorMng::SearchElementResultTimer(const int se
         }
         gettimeofday(&getTime, NULL);
         uint64_t endTime = (uint64_t)(getTime.tv_sec * SECOND_TO_MILLIS + getTime.tv_usec);
+        if (endTime < startTime) {
+            HILOG_ERROR("timer is wrong.");
+            return false;
+        }
         uint64_t waitTime = (uint64_t)(endTime - startTime);
         if (TIMEOUT_OPERATOR_MILLIS < waitTime) {
             completed_ = true;
diff --git a/frameworks/asacfwk/src/accessibility_element_operator_callback_proxy.cpp b/frameworks/asacfwk/src/accessibility_element_operator_callback_proxy.cpp
index 34f82fc7..33af7d98 100644
--- a/frameworks/asacfwk/src/accessibility_element_operator_callback_proxy.cpp
+++ b/frameworks/asacfwk/src/accessibility_element_operator_callback_proxy.cpp
@@ -37,12 +37,28 @@ bool AccessibilityElementOperatorCallbackProxy::WriteInterfaceToken(MessageParce
     return true;
 }
 
+bool AccessibilityElementOperatorCallbackProxy::SendTransactCmd(IAccessibilityElementOperatorCallback::Message code,
+    MessageParcel &data, MessageParcel &reply,  MessageOption &option)
+{
+    HILOG_DEBUG("start.");
+
+    sptr<IRemoteObject> remote = Remote();
+    if (!remote) {
+        HILOG_ERROR("fail to send transact cmd %{public}d due to remote object", code);
+        return false;
+    }
+    int32_t result = remote->SendRequest(static_cast<uint32_t>(code), data, reply, option);
+    if (result != NO_ERROR) {
+        HILOG_ERROR("receive error transact code %{public}d in transact cmd %{public}d", result, code);
+        return false;
+    }
+    return true;
+}
+
 void AccessibilityElementOperatorCallbackProxy::SetSearchElementInfoByAccessibilityIdResult(
     const std::vector<AccessibilityElementInfo> &infos, const int requestId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -62,11 +78,10 @@ void AccessibilityElementOperatorCallbackProxy::SetSearchElementInfoByAccessibil
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibilityElementOperatorCallback::Message::SET_RESULT_BY_ACCESSIBILITY_ID),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SearchAccessibilityInfoByAccessibility fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibilityElementOperatorCallback::Message::SET_RESULT_BY_ACCESSIBILITY_ID,
+        data, reply, option)) {
+        HILOG_ERROR("SetSearchElementInfoByAccessibilityIdResult failed");
+        return;
     }
 }
 
@@ -74,8 +89,6 @@ void AccessibilityElementOperatorCallbackProxy::SetSearchElementInfoByTextResult
     const std::vector<AccessibilityElementInfo> &infos, const int requestId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -95,11 +108,10 @@ void AccessibilityElementOperatorCallbackProxy::SetSearchElementInfoByTextResult
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibilityElementOperatorCallback::Message::SET_RESULT_BY_TEXT),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SearchAccessibilityInfoByAccessibility fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibilityElementOperatorCallback::Message::SET_RESULT_BY_TEXT,
+        data, reply, option)) {
+        HILOG_ERROR("SetSearchElementInfoByTextResult failed");
+        return;
     }
 }
 
@@ -107,8 +119,6 @@ void AccessibilityElementOperatorCallbackProxy::SetFindFocusedElementInfoResult(
     const AccessibilityElementInfo &info, const int requestId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -127,11 +137,10 @@ void AccessibilityElementOperatorCallbackProxy::SetFindFocusedElementInfoResult(
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibilityElementOperatorCallback::Message::SET_RESULT_FOCUSED_INFO),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetFindFocusedElementInfo fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibilityElementOperatorCallback::Message::SET_RESULT_FOCUSED_INFO,
+        data, reply, option)) {
+        HILOG_ERROR("SetFindFocusedElementInfoResult failed");
+        return;
     }
 }
 
@@ -139,8 +148,6 @@ void AccessibilityElementOperatorCallbackProxy::SetFocusMoveSearchResult(const A
     const int requestId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -160,19 +167,16 @@ void AccessibilityElementOperatorCallbackProxy::SetFocusMoveSearchResult(const A
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibilityElementOperatorCallback::Message::SET_RESULT_FOCUS_MOVE),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetFocusMoveSearchResult fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibilityElementOperatorCallback::Message::SET_RESULT_FOCUS_MOVE,
+        data, reply, option)) {
+        HILOG_ERROR("SetFocusMoveSearchResult failed");
+        return;
     }
 }
 
 void AccessibilityElementOperatorCallbackProxy::SetExecuteActionResult(const bool succeeded, const int requestId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -192,11 +196,10 @@ void AccessibilityElementOperatorCallbackProxy::SetExecuteActionResult(const boo
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibilityElementOperatorCallback::Message::SET_RESULT_PERFORM_ACTION),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetExecuteActionResult fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibilityElementOperatorCallback::Message::SET_RESULT_PERFORM_ACTION,
+        data, reply, option)) {
+        HILOG_ERROR("SetExecuteActionResult failed");
+        return;
     }
 }
 
diff --git a/frameworks/asacfwk/src/accessibility_element_operator_callback_stub.cpp b/frameworks/asacfwk/src/accessibility_element_operator_callback_stub.cpp
index 52c03f57..2264e64f 100644
--- a/frameworks/asacfwk/src/accessibility_element_operator_callback_stub.cpp
+++ b/frameworks/asacfwk/src/accessibility_element_operator_callback_stub.cpp
@@ -49,12 +49,12 @@ AccessibilityElementOperatorCallbackStub::~AccessibilityElementOperatorCallbackS
 int AccessibilityElementOperatorCallbackStub::OnRemoteRequest(uint32_t code, MessageParcel &data,
     MessageParcel &reply, MessageOption &option)
 {
-    HILOG_DEBUG("AccessibilityElementOperatorCallbackStub::OnRemoteRequest, cmd = %d, flags= %d",
+    HILOG_DEBUG("AccessibilityElementOperatorCallbackStub::OnRemoteRequest, cmd = %{public}u, flags= %{public}d",
         code, option.GetFlags());
     std::u16string descriptor = AccessibilityElementOperatorCallbackStub::GetDescriptor();
     std::u16string remoteDescriptor = data.ReadInterfaceToken();
     if (descriptor != remoteDescriptor) {
-        HILOG_INFO("local descriptor is not equal to remote");
+        HILOG_ERROR("local descriptor is not equal to remote");
         return ERR_INVALID_STATE;
     }
 
diff --git a/frameworks/asacfwk/src/accessibility_element_operator_proxy.cpp b/frameworks/asacfwk/src/accessibility_element_operator_proxy.cpp
index 1555e4f5..420d802d 100644
--- a/frameworks/asacfwk/src/accessibility_element_operator_proxy.cpp
+++ b/frameworks/asacfwk/src/accessibility_element_operator_proxy.cpp
@@ -38,12 +38,27 @@ bool AccessibilityElementOperatorProxy::WriteInterfaceToken(MessageParcel &data)
     return true;
 }
 
+bool AccessibilityElementOperatorProxy::SendTransactCmd(IAccessibilityElementOperator::Message code,
+    MessageParcel &data, MessageParcel &reply,  MessageOption &option)
+{
+    HILOG_DEBUG("start.");
+    sptr<IRemoteObject> remote = Remote();
+    if (!remote) {
+        HILOG_ERROR("fail to send transact cmd %{public}d due to remote object", code);
+        return false;
+    }
+    int32_t result = remote->SendRequest(static_cast<uint32_t>(code), data, reply, option);
+    if (result != NO_ERROR) {
+        HILOG_ERROR("receive error transact code %{public}d in transact cmd %{public}d", result, code);
+        return false;
+    }
+    return true;
+}
+
 void AccessibilityElementOperatorProxy::SearchElementInfoByAccessibilityId(const long elementId,
     const int requestId, const sptr<IAccessibilityElementOperatorCallback> &callback, const int mode)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -63,6 +78,10 @@ void AccessibilityElementOperatorProxy::SearchElementInfoByAccessibilityId(const
         return;
     }
 
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("fail, connection write parcelable callback error");
         return;
@@ -73,11 +92,9 @@ void AccessibilityElementOperatorProxy::SearchElementInfoByAccessibilityId(const
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(AccessibilityElementOperatorProxy::Message::SEARCH_BY_ACCESSIBILITY_ID),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SearchAccessibilityInfo fail, error: %d", error);
+    if (!SendTransactCmd(AccessibilityElementOperatorProxy::Message::SEARCH_BY_ACCESSIBILITY_ID,
+        data, reply, option)) {
+        HILOG_ERROR("SearchElementInfoByAccessibilityId failed");
         return;
     }
 }
@@ -87,8 +104,6 @@ void AccessibilityElementOperatorProxy::SearchElementInfosByText(const long elem
     const int requestId, const sptr<IAccessibilityElementOperatorCallback> &callback)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -112,16 +127,17 @@ void AccessibilityElementOperatorProxy::SearchElementInfosByText(const long elem
         return;
     }
 
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("fail, connection write callback error");
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(AccessibilityElementOperatorProxy::Message::SEARCH_BY_TEXT),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SearchElementInfosByText fail, error: %d", error);
+    if (!SendTransactCmd(AccessibilityElementOperatorProxy::Message::SEARCH_BY_TEXT, data, reply, option)) {
+        HILOG_ERROR("SearchElementInfosByText failed");
         return;
     }
 }
@@ -130,8 +146,6 @@ void AccessibilityElementOperatorProxy::FindFocusedElementInfo(const long elemen
     const int focusType, const int requestId, const sptr<IAccessibilityElementOperatorCallback> &callback)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -156,16 +170,17 @@ void AccessibilityElementOperatorProxy::FindFocusedElementInfo(const long elemen
         return;
     }
 
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("fail, connection write callback error");
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(AccessibilityElementOperatorProxy::Message::FIND_FOCUSED_INFO),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("FindFocusedElementInfo fail, error: %d", error);
+    if (!SendTransactCmd(AccessibilityElementOperatorProxy::Message::FIND_FOCUSED_INFO, data, reply, option)) {
+        HILOG_ERROR("FindFocusedElementInfo failed");
         return;
     }
 }
@@ -174,8 +189,6 @@ void AccessibilityElementOperatorProxy::FocusMoveSearch(const long elementId,
     const int direction, const int requestId, const sptr<IAccessibilityElementOperatorCallback> &callback)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -200,15 +213,17 @@ void AccessibilityElementOperatorProxy::FocusMoveSearch(const long elementId,
         return;
     }
 
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("fail, connection write callback error");
         return;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>(AccessibilityElementOperatorProxy::Message::FOCUS_FIND),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("FindFocusedElementInfo fail, error: %d", error);
+    if (!SendTransactCmd(AccessibilityElementOperatorProxy::Message::FOCUS_FIND, data, reply, option)) {
+        HILOG_ERROR("FocusMoveSearch failed");
         return;
     }
 }
@@ -218,8 +233,6 @@ void AccessibilityElementOperatorProxy::ExecuteAction(const long elementId, cons
     const sptr<IAccessibilityElementOperatorCallback> &callback)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -263,16 +276,17 @@ void AccessibilityElementOperatorProxy::ExecuteAction(const long elementId, cons
         return;
     }
 
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("fail, connection write callback error");
         return;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>(
-        AccessibilityElementOperatorProxy::Message::PERFORM_ACTION),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("ExecuteAction fail, error: %d", error);
+    if (!SendTransactCmd(AccessibilityElementOperatorProxy::Message::PERFORM_ACTION, data, reply, option)) {
+        HILOG_ERROR("ExecuteAction failed");
         return;
     }
 }
@@ -280,8 +294,6 @@ void AccessibilityElementOperatorProxy::ExecuteAction(const long elementId, cons
 void AccessibilityElementOperatorProxy::ClearFocus()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -290,10 +302,8 @@ void AccessibilityElementOperatorProxy::ClearFocus()
         return;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>(AccessibilityElementOperatorProxy::Message::CLEAR_FOCUS),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("ExecuteAction fail, error: %d", error);
+    if (!SendTransactCmd(AccessibilityElementOperatorProxy::Message::CLEAR_FOCUS, data, reply, option)) {
+        HILOG_ERROR("ClearFocus failed");
         return;
     }
 }
@@ -301,8 +311,6 @@ void AccessibilityElementOperatorProxy::ClearFocus()
 void AccessibilityElementOperatorProxy::OutsideTouch()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -311,11 +319,8 @@ void AccessibilityElementOperatorProxy::OutsideTouch()
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(AccessibilityElementOperatorProxy::Message::OUTSIDE_TOUCH),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("ExecuteAction fail, error: %d", error);
+    if (!SendTransactCmd(AccessibilityElementOperatorProxy::Message::OUTSIDE_TOUCH, data, reply, option)) {
+        HILOG_ERROR("OutsideTouch failed");
         return;
     }
 }
diff --git a/frameworks/asacfwk/src/accessibility_element_operator_stub.cpp b/frameworks/asacfwk/src/accessibility_element_operator_stub.cpp
index 0855f704..c0d6d100 100644
--- a/frameworks/asacfwk/src/accessibility_element_operator_stub.cpp
+++ b/frameworks/asacfwk/src/accessibility_element_operator_stub.cpp
@@ -57,7 +57,8 @@ AccessibilityElementOperatorStub::~AccessibilityElementOperatorStub()
 int AccessibilityElementOperatorStub::OnRemoteRequest(uint32_t code, MessageParcel &data,
     MessageParcel &reply, MessageOption &option)
 {
-    HILOG_DEBUG("AccessibilityElementOperatorStub::OnRemoteRequest,cmd = %d,flags= %d", code, option.GetFlags());
+    HILOG_DEBUG("AccessibilityElementOperatorStub::OnRemoteRequest,cmd = %{public}u, flags = %{public}d",
+        code, option.GetFlags());
     std::u16string descriptor = AccessibilityElementOperatorStub::GetDescriptor();
     std::u16string remoteDescriptor = data.ReadInterfaceToken();
     if (descriptor != remoteDescriptor) {
@@ -200,7 +201,7 @@ void AccessibilityElementOperatorStub::SearchElementInfoByAccessibilityId(const
     if (obj != nullptr) {
         obj->SearchElementInfoByAccessibilityId(elementId, requestId, *tempCallback, mode);
     } else {
-        HILOG_DEBUG("Can not find interaction object");
+        HILOG_ERROR("Can not find interaction object");
     }
 }
 
diff --git a/frameworks/asacfwk/src/accessibility_event_info.cpp b/frameworks/asacfwk/src/accessibility_event_info.cpp
index 8059d6d1..5dc10b90 100644
--- a/frameworks/asacfwk/src/accessibility_event_info.cpp
+++ b/frameworks/asacfwk/src/accessibility_event_info.cpp
@@ -100,15 +100,14 @@ bool AccessibilityMemo::GetSource(AccessibilityElementInfo &elementInfo) const
     bool result = false;
     if (instance != nullptr) {
         result = instance->SearchElementInfosByAccessibilityId(channelId_, windowId_, elementId_, 0, elementInfos);
-        for (auto& info : elementInfos) {
+        HILOG_DEBUG("elementInfos' size is [%{public}d]", elementInfos.size());
+        if (!elementInfos.empty()) {
             HILOG_INFO("called] GetSource OK");
             result = true;
-            elementInfo = info;
-            break;
+            elementInfo = elementInfos[0];
         }
-        HILOG_INFO("called] GetSource is null");
     } else {
-        HILOG_INFO("called] Can't get AccessibilityOperator instance");
+        HILOG_ERROR("called] Can't get AccessibilityOperator instance");
     }
     return result;
 }
@@ -304,7 +303,7 @@ bool AccessibilityEventInfo::ReadFromParcel(Parcel &parcel)
     int32_t contentSize = 0;
     READ_PARCEL_AND_RETURN_FALSE_IF_FAIL(Int32, parcel, contentSize);
     std::string content;
-    for (auto i = 0 ; i < contentSize; i++) {
+    for (auto j = 0 ; j < contentSize; j++) {
         READ_PARCEL_AND_RETURN_FALSE_IF_FAIL(String, parcel, content);
         AddContent(content);
     }
diff --git a/frameworks/asacfwk/src/accessibility_operator.cpp b/frameworks/asacfwk/src/accessibility_operator.cpp
index ab8a2d29..24988a5d 100644
--- a/frameworks/asacfwk/src/accessibility_operator.cpp
+++ b/frameworks/asacfwk/src/accessibility_operator.cpp
@@ -99,10 +99,9 @@ bool AccessibilityOperator::GetRoot(int channelId, AccessibilityElementInfo &ele
     int activeWindow = AccessibilitySystemAbilityClient::GetInstance()->GetActiveWindow();
     HILOG_DEBUG("activeWindow is %{public}d", activeWindow);
     bool result = SearchElementInfosByAccessibilityId(channelId, activeWindow, NONE_ID, 0, elementInfos);
-    for (auto& info : elementInfos) {
-        HILOG_DEBUG("element [elementSize:%{public}d]", elementInfosResult_.size());
-        elementInfo = info;
-        break;
+    HILOG_DEBUG("element [elementSize:%{public}d]", elementInfos.size());
+    if (!elementInfos.empty()) {
+        elementInfo = elementInfos[0];
     }
     return result;
 }
@@ -198,9 +197,7 @@ bool AccessibilityOperator::FindFocusedElementInfo(int channelId, int accessibil
         if (!result) {
             return result;
         }
-
-        HILOG_DEBUG("FindFocusedElementInfo channelId[%{public}d] elementId[%{public}d],\
-            focusType[%{public}d] sequenceNum[%{public}d]",
+        HILOG_DEBUG("channelId[%{public}d], elementId[%{public}d], focusType[%{public}d], sequenceNum[%{public}d]",
             channelId, accessibilityWindowId, elementId, focusType);
         if (!asyncElementOperatorMng_.SearchElementResultTimer(sequenceNum)) {
             HILOG_ERROR("Failed to wait result");
diff --git a/frameworks/asacfwk/src/accessibility_system_ability_client.cpp b/frameworks/asacfwk/src/accessibility_system_ability_client.cpp
index dec101e2..1db9d507 100644
--- a/frameworks/asacfwk/src/accessibility_system_ability_client.cpp
+++ b/frameworks/asacfwk/src/accessibility_system_ability_client.cpp
@@ -208,7 +208,7 @@ shared_ptr<AccessibilityElementOperator> AccessibilitySystemAbilityClient::GetOp
             return it->second;
         }
     }
-    HILOG_DEBUG("Failed to get interaction");
+    HILOG_ERROR("Failed to get interaction");
     return nullptr;
 }
 
@@ -518,33 +518,36 @@ bool AccessibilitySystemAbilityClient::UnsubscribeStateObserver(const shared_ptr
         return false;
     }
     bool result = false;
-    for (auto it = observersAccessibilityState_.begin(); it != observersAccessibilityState_.end(); it++) {
-        if (*it == observer) {
-            observersAccessibilityState_.erase(it);
+    for (auto accessibilityState = observersAccessibilityState_.begin();
+        accessibilityState != observersAccessibilityState_.end(); accessibilityState++) {
+        if (*accessibilityState == observer) {
+            observersAccessibilityState_.erase(accessibilityState);
             result = true;
             break;
         }
     }
 
-    for (auto it = observersTouchState_.begin(); it != observersTouchState_.end(); it++) {
-        if (*it == observer) {
-            observersTouchState_.erase(it);
+    for (auto touchState = observersTouchState_.begin(); touchState != observersTouchState_.end(); touchState++) {
+        if (*touchState == observer) {
+            observersTouchState_.erase(touchState);
             result = true;
             break;
         }
     }
 
-    for (auto it = observersKeyEventState_.begin(); it != observersKeyEventState_.end(); it++) {
-        if (*it == observer) {
-            observersKeyEventState_.erase(it);
+    for (auto keyEventState = observersKeyEventState_.begin(); keyEventState != observersKeyEventState_.end();
+        keyEventState++) {
+        if (*keyEventState == observer) {
+            observersKeyEventState_.erase(keyEventState);
             result = true;
             break;
         }
     }
 
-    for (auto it = observersGestureState_.begin(); it != observersGestureState_.end(); it++) {
-        if (*it == observer) {
-            observersGestureState_.erase(it);
+    for (auto gestureState = observersGestureState_.begin(); gestureState != observersGestureState_.end();
+        gestureState++) {
+        if (*gestureState == observer) {
+            observersGestureState_.erase(gestureState);
             result = true;
             break;
         }
@@ -663,17 +666,18 @@ bool AccessibilitySystemAbilityClient::DeleteCaptionListener(
     HILOG_DEBUG("start");
     bool result = false;
     if (type == CaptionObserverType::CAPTION_ENABLE) {
-        for (auto it = observersCaptionEnable_.begin(); it != observersCaptionEnable_.end(); ++it) {
-            if (*it == ob) {
-                observersCaptionEnable_.erase(it);
+        for (auto enable = observersCaptionEnable_.begin(); enable != observersCaptionEnable_.end(); ++enable) {
+            if (*enable == ob) {
+                observersCaptionEnable_.erase(enable);
                 result = true;
                 break;
             }
         }
     } else if (type == CaptionObserverType::CAPTION_PROPERTY) {
-        for (auto it = observersCaptionProperty_.begin(); it != observersCaptionProperty_.end(); ++it) {
-            if (*it == ob) {
-                observersCaptionProperty_.erase(it);
+        for (auto property = observersCaptionProperty_.begin(); property != observersCaptionProperty_.end();
+            ++property) {
+            if (*property == ob) {
+                observersCaptionProperty_.erase(property);
                 result = true;
                 break;
             }
diff --git a/frameworks/asacfwk/src/accessible_ability_channel_proxy.cpp b/frameworks/asacfwk/src/accessible_ability_channel_proxy.cpp
index d966a75e..251e4e54 100644
--- a/frameworks/asacfwk/src/accessible_ability_channel_proxy.cpp
+++ b/frameworks/asacfwk/src/accessible_ability_channel_proxy.cpp
@@ -80,6 +80,10 @@ bool AccessibleAbilityChannelProxy::SearchElementInfoByAccessibilityId(const int
         HILOG_ERROR("requestId write error: %{public}d, ", requestId);
         return false;
     }
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return false;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("callback write error");
         return false;
@@ -126,6 +130,10 @@ bool AccessibleAbilityChannelProxy::SearchElementInfosByText(const int accessibi
         HILOG_ERROR("requestId write error: %{public}d, ", requestId);
         return false;
     }
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return false;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("callback write error");
         return false;
@@ -168,6 +176,10 @@ bool AccessibleAbilityChannelProxy::FindFocusedElementInfo(const int accessibili
         HILOG_ERROR("requestId write error: %{public}d, ", requestId);
         return false;
     }
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return false;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("callback write error");
         return false;
@@ -208,6 +220,10 @@ bool AccessibleAbilityChannelProxy::FocusMoveSearch(const int accessibilityWindo
         HILOG_ERROR("requestId write error: %{public}d, ", requestId);
         return false;
     }
+    if (!callback) {
+        HILOG_ERROR("callback is nullptr.");
+        return false;
+    }
     if (!data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("callback write error");
         return false;
@@ -265,7 +281,7 @@ bool AccessibleAbilityChannelProxy::ExecuteAction(const int accessibilityWindowI
         HILOG_ERROR("requestId write error: %{public}d, ", requestId);
         return false;
     }
-    if (!data.WriteRemoteObject(callback->AsObject())) {
+    if (!callback || !data.WriteRemoteObject(callback->AsObject())) {
         HILOG_ERROR("callback write error");
         return false;
     }
diff --git a/frameworks/asacfwk/src/accessible_ability_manager_service_caption_property_proxy.cpp b/frameworks/asacfwk/src/accessible_ability_manager_service_caption_property_proxy.cpp
index ccee2ce9..1f78c04e 100644
--- a/frameworks/asacfwk/src/accessible_ability_manager_service_caption_property_proxy.cpp
+++ b/frameworks/asacfwk/src/accessible_ability_manager_service_caption_property_proxy.cpp
@@ -55,7 +55,13 @@ void AccessibleAbilityManagerServiceCaptionPropertyProxy::OnCaptionPropertyChang
         return;
     }
 
-    error = Remote()->SendRequest(
+    sptr<IRemoteObject> remote = Remote();
+    if (!remote) {
+        HILOG_ERROR("fail to send transact cmd due to remote object");
+        return;
+    }
+
+    error = remote->SendRequest(
         static_cast<uint32_t>(IAccessibleAbilityManagerServiceCaptionProperty::Message::ON_CAPTION_PROPERTY_CHANGED),
         data, reply, option);
     if (error != NO_ERROR) {
diff --git a/frameworks/asacfwk/src/accessible_ability_manager_service_caption_property_stub.cpp b/frameworks/asacfwk/src/accessible_ability_manager_service_caption_property_stub.cpp
index ed075139..8045b209 100644
--- a/frameworks/asacfwk/src/accessible_ability_manager_service_caption_property_stub.cpp
+++ b/frameworks/asacfwk/src/accessible_ability_manager_service_caption_property_stub.cpp
@@ -64,7 +64,7 @@ void AccessibleAbilityManagerServiceCaptionPropertyStub::OnCaptionPropertyChange
     HILOG_DEBUG("start");
     std::shared_ptr<AccessibilitySystemAbilityClient>  instance = AccessibilitySystemAbilityClient::GetInstance();
     if (!instance) {
-        HILOG_DEBUG("Can't get asac instance");
+        HILOG_ERROR("Can't get asac instance");
         return;
     }
     instance->UpdatecaptionProperty(caption);
diff --git a/frameworks/asacfwk/src/accessible_ability_manager_service_proxy.cpp b/frameworks/asacfwk/src/accessible_ability_manager_service_proxy.cpp
index f2299dad..cf7cc82c 100644
--- a/frameworks/asacfwk/src/accessible_ability_manager_service_proxy.cpp
+++ b/frameworks/asacfwk/src/accessible_ability_manager_service_proxy.cpp
@@ -39,11 +39,27 @@ bool AccessibleAbilityManagerServiceClientProxy::WriteInterfaceToken(MessageParc
     return true;
 }
 
+bool AccessibleAbilityManagerServiceClientProxy::SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message code,
+    MessageParcel &data, MessageParcel &reply,  MessageOption &option)
+{
+    HILOG_DEBUG("start.");
+
+    sptr<IRemoteObject> remote = Remote();
+    if (!remote) {
+        HILOG_ERROR("fail to send transact cmd %{public}d due to remote object", code);
+        return false;
+    }
+    int32_t result = remote->SendRequest(static_cast<uint32_t>(code), data, reply, option);
+    if (result != NO_ERROR) {
+        HILOG_ERROR("receive error transact code %{public}d in transact cmd %{public}d", result, code);
+        return false;
+    }
+    return true;
+}
+
 void AccessibleAbilityManagerServiceClientProxy::SendEvent(const AccessibilityEventInfo& uiEvent, const int userId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -63,10 +79,8 @@ void AccessibleAbilityManagerServiceClientProxy::SendEvent(const AccessibilityEv
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::SEND_EVENT), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SendEvent fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::SEND_EVENT, data, reply, option)) {
+        HILOG_ERROR("SendEvent fail");
         return;
     }
 }
@@ -74,8 +88,6 @@ void AccessibleAbilityManagerServiceClientProxy::SendEvent(const AccessibilityEv
 bool AccessibleAbilityManagerServiceClientProxy::SetCaptionProperty(const CaptionProperty& caption)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -90,13 +102,8 @@ bool AccessibleAbilityManagerServiceClientProxy::SetCaptionProperty(const Captio
         return false;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::SET_CAPTION_PROPERTY),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetCaptionProperty fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::SET_CAPTION_PROPERTY, data, reply, option)) {
+        HILOG_ERROR("SetCaptionProperty fail");
         return false;
     }
     return true;
@@ -105,8 +112,6 @@ bool AccessibleAbilityManagerServiceClientProxy::SetCaptionProperty(const Captio
 bool AccessibleAbilityManagerServiceClientProxy::SetCaptionState(const bool state)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -121,10 +126,8 @@ bool AccessibleAbilityManagerServiceClientProxy::SetCaptionState(const bool stat
         return false;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::SET_CAPTION_STATE), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetCaptionState fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::SET_CAPTION_STATE, data, reply, option)) {
+        HILOG_ERROR("SetCaptionState fail");
         return false;
     }
     return true;
@@ -133,8 +136,6 @@ bool AccessibleAbilityManagerServiceClientProxy::SetCaptionState(const bool stat
 bool AccessibleAbilityManagerServiceClientProxy::SetEnabled(const bool state)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -149,10 +150,8 @@ bool AccessibleAbilityManagerServiceClientProxy::SetEnabled(const bool state)
         return false;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::SET_ENABLED), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetEnabled fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::SET_ENABLED, data, reply, option)) {
+        HILOG_ERROR("SetEnabled fail");
         return false;
     }
     return true;
@@ -162,8 +161,6 @@ uint32_t AccessibleAbilityManagerServiceClientProxy::RegisterStateCallback(
     const sptr<IAccessibleAbilityManagerServiceState>& client, const int userId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_SYNC);
@@ -188,16 +185,11 @@ uint32_t AccessibleAbilityManagerServiceClientProxy::RegisterStateCallback(
         return ErrCode::ERROR;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::REGISTER_STATE_CALLBACK),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SendEvent fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::REGISTER_STATE_CALLBACK,
+        data, reply, option)) {
+        HILOG_ERROR("RegisterStateCallback fail");
         return ErrCode::ERROR;
     }
-
     return reply.ReadUint32();
 }
 
@@ -205,8 +197,6 @@ std::vector<AccessibilityAbilityInfo> AccessibleAbilityManagerServiceClientProxy
     const uint32_t abilityTypes, const int32_t stateType)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -227,10 +217,9 @@ std::vector<AccessibilityAbilityInfo> AccessibleAbilityManagerServiceClientProxy
         return errorList;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_ABILITYLIST), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SendEvent fail, error: %d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_ABILITYLIST,
+        data, reply, option)) {
+        HILOG_ERROR("GetAbilityList fail");
         return errorList;
     }
     // read result
@@ -251,8 +240,6 @@ void AccessibleAbilityManagerServiceClientProxy::RegisterElementOperator(
     int windowId, const sptr<IAccessibilityElementOperator>& operation, const int userId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -282,13 +269,9 @@ void AccessibleAbilityManagerServiceClientProxy::RegisterElementOperator(
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::REGISTER_INTERACTION_CONNECTION),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Register fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::REGISTER_INTERACTION_CONNECTION,
+        data, reply, option)) {
+        HILOG_ERROR("RegisterElementOperator fail");
         return;
     }
 }
@@ -296,8 +279,6 @@ void AccessibleAbilityManagerServiceClientProxy::RegisterElementOperator(
 void AccessibleAbilityManagerServiceClientProxy::DeregisterElementOperator(const int windowId)
 {
     HILOG_DEBUG("windowId(%{public}d)", windowId);
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -312,13 +293,9 @@ void AccessibleAbilityManagerServiceClientProxy::DeregisterElementOperator(const
         return;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::DEREGISTER_INTERACTION_CONNECTION),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Deregister fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::DEREGISTER_INTERACTION_CONNECTION,
+        data, reply, option)) {
+        HILOG_ERROR("DeregisterElementOperator fail");
         return;
     }
 }
@@ -326,8 +303,6 @@ void AccessibleAbilityManagerServiceClientProxy::DeregisterElementOperator(const
 CaptionProperty AccessibleAbilityManagerServiceClientProxy::GetCaptionProperty()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -336,24 +311,25 @@ CaptionProperty AccessibleAbilityManagerServiceClientProxy::GetCaptionProperty()
         HILOG_ERROR("fail, connection write Token error");
         return property;
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_CAPTION_PROPERTY),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Interrupt fail, error: %{public}d", error);
+
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_CAPTION_PROPERTY,
+        data, reply, option)) {
+        HILOG_ERROR("GetCaptionProperty fail");
         return property;
     }
-    return *reply.ReadParcelable<CaptionProperty>();
+
+    std::unique_ptr<CaptionProperty> captionProperty(reply.ReadParcelable<CaptionProperty>());
+    if (!captionProperty) {
+        HILOG_ERROR("ReadParcelable<CaptionProperty> failed");
+        return property;
+    }
+    return *captionProperty;
 }
 
 uint32_t AccessibleAbilityManagerServiceClientProxy::RegisterCaptionPropertyCallback(
     const sptr<IAccessibleAbilityManagerServiceCaptionProperty>& client, const int userId)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option(MessageOption::TF_ASYNC);
@@ -378,16 +354,11 @@ uint32_t AccessibleAbilityManagerServiceClientProxy::RegisterCaptionPropertyCall
         return ErrCode::ERROR;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::REGISTER_CAPTION_PROPERTY_CALLBACK),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SendEvent fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::REGISTER_CAPTION_PROPERTY_CALLBACK,
+        data, reply, option)) {
+        HILOG_ERROR("RegisterCaptionPropertyCallback fail");
         return ErrCode::ERROR;
     }
-
     return reply.ReadUint32();
 }
 
@@ -399,8 +370,6 @@ sptr<IRemoteObject> AccessibleAbilityManagerServiceClientProxy::GetObject()
 bool AccessibleAbilityManagerServiceClientProxy::GetEnabledState()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -409,10 +378,9 @@ bool AccessibleAbilityManagerServiceClientProxy::GetEnabledState()
         HILOG_ERROR("fail, connection write Token");
         return false;
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_ENABLED), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("GetEnabled fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_ENABLED,
+        data, reply, option)) {
+        HILOG_ERROR("GetEnabledState fail");
         return false;
     }
     return reply.ReadBool();
@@ -421,8 +389,6 @@ bool AccessibleAbilityManagerServiceClientProxy::GetEnabledState()
 bool AccessibleAbilityManagerServiceClientProxy::GetCaptionState()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -431,10 +397,9 @@ bool AccessibleAbilityManagerServiceClientProxy::GetCaptionState()
         HILOG_ERROR("fail, connection write Token");
         return false;
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_CAPTION_STATE), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("GetCaptionState fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_CAPTION_STATE,
+        data, reply, option)) {
+        HILOG_ERROR("GetCaptionState fail");
         return false;
     }
     return reply.ReadBool();
@@ -443,8 +408,6 @@ bool AccessibleAbilityManagerServiceClientProxy::GetCaptionState()
 bool AccessibleAbilityManagerServiceClientProxy::GetTouchGuideState()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -453,13 +416,9 @@ bool AccessibleAbilityManagerServiceClientProxy::GetTouchGuideState()
         HILOG_ERROR("fail, connection write Token");
         return false;
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_TOUCH_GUIDE_STATE),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("GetTouchGuideState fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_TOUCH_GUIDE_STATE,
+        data, reply, option)) {
+        HILOG_ERROR("GetTouchGuideState fail");
         return false;
     }
     return reply.ReadBool();
@@ -468,8 +427,6 @@ bool AccessibleAbilityManagerServiceClientProxy::GetTouchGuideState()
 bool AccessibleAbilityManagerServiceClientProxy::GetGestureState()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -478,10 +435,9 @@ bool AccessibleAbilityManagerServiceClientProxy::GetGestureState()
         HILOG_ERROR("fail, connection write Token");
         return false;
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_GESTURE_STATE), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("GetGestureState fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_GESTURE_STATE,
+        data, reply, option)) {
+        HILOG_ERROR("GetGestureState fail");
         return false;
     }
     return reply.ReadBool();
@@ -490,8 +446,6 @@ bool AccessibleAbilityManagerServiceClientProxy::GetGestureState()
 bool AccessibleAbilityManagerServiceClientProxy::GetKeyEventObserverState()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -500,13 +454,9 @@ bool AccessibleAbilityManagerServiceClientProxy::GetKeyEventObserverState()
         HILOG_ERROR("fail, connection write Token");
         return false;
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_KEY_EVENT_OBSERVE_STATE),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("GetKeyEventObserverState fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_KEY_EVENT_OBSERVE_STATE,
+        data, reply, option)) {
+        HILOG_ERROR("GetKeyEventObserverState fail");
         return false;
     }
     return reply.ReadBool();
@@ -515,8 +465,6 @@ bool AccessibleAbilityManagerServiceClientProxy::GetKeyEventObserverState()
 bool AccessibleAbilityManagerServiceClientProxy::SetTouchGuideState(const bool state)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -531,13 +479,9 @@ bool AccessibleAbilityManagerServiceClientProxy::SetTouchGuideState(const bool s
         return false;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::SET_TOUCH_GUIDE_STATE),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetTouchGuideState fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::SET_TOUCH_GUIDE_STATE,
+        data, reply, option)) {
+        HILOG_ERROR("SetTouchGuideState fail");
         return false;
     }
     return true;
@@ -546,8 +490,6 @@ bool AccessibleAbilityManagerServiceClientProxy::SetTouchGuideState(const bool s
 bool AccessibleAbilityManagerServiceClientProxy::SetGestureState(const bool state)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -562,10 +504,9 @@ bool AccessibleAbilityManagerServiceClientProxy::SetGestureState(const bool stat
         return false;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::SET_GESTURE_STATE), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetGestureState fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::SET_GESTURE_STATE,
+        data, reply, option)) {
+        HILOG_ERROR("SetGestureState fail");
         return false;
     }
     return true;
@@ -574,8 +515,6 @@ bool AccessibleAbilityManagerServiceClientProxy::SetGestureState(const bool stat
 bool AccessibleAbilityManagerServiceClientProxy::SetKeyEventObserverState(const bool state)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -590,13 +529,9 @@ bool AccessibleAbilityManagerServiceClientProxy::SetKeyEventObserverState(const
         return false;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::SET_KEY_EVENT_OBSERVE_STATE),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetKeyEventObserverState fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::SET_KEY_EVENT_OBSERVE_STATE,
+        data, reply, option)) {
+        HILOG_ERROR("SetKeyEventObserverState fail");
         return false;
     }
     return true;
@@ -605,8 +540,6 @@ bool AccessibleAbilityManagerServiceClientProxy::SetKeyEventObserverState(const
 bool AccessibleAbilityManagerServiceClientProxy::SetEnabledObj(std::map<std::string, AppExecFwk::ElementName> it)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -626,13 +559,9 @@ bool AccessibleAbilityManagerServiceClientProxy::SetEnabledObj(std::map<std::str
         }
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::SET_ENABLED_OBJECT),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetEnabledObj fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::SET_ENABLED_OBJECT,
+        data, reply, option)) {
+        HILOG_ERROR("SetEnabledObj fail");
         return false;
     }
     return true;
@@ -641,8 +570,6 @@ bool AccessibleAbilityManagerServiceClientProxy::SetEnabledObj(std::map<std::str
 std::map<std::string, AppExecFwk::ElementName> AccessibleAbilityManagerServiceClientProxy::GetEnabledAbilities()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -652,13 +579,9 @@ std::map<std::string, AppExecFwk::ElementName> AccessibleAbilityManagerServiceCl
         HILOG_ERROR("fail, connection write Token error");
         return it;
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_ENABLED_OBJECT),
-        data,
-        reply,
-        option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Interrupt fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_ENABLED_OBJECT,
+        data, reply, option)) {
+        HILOG_ERROR("GetEnabledAbilities fail");
         return it;
     }
 
@@ -673,8 +596,8 @@ std::map<std::string, AppExecFwk::ElementName> AccessibleAbilityManagerServiceCl
         temp.push_back(*iter);
     }
 
-    for (int i = 0; i < dev_num; i++) {
-        it.insert(make_pair(temp[i].GetURI(), temp[i]));
+    for (int j = 0; j < dev_num; j++) {
+        it.insert(make_pair(temp[j].GetURI(), temp[j]));
     }
     return it;
 }
@@ -682,8 +605,6 @@ std::map<std::string, AppExecFwk::ElementName> AccessibleAbilityManagerServiceCl
 std::vector<AccessibilityAbilityInfo> AccessibleAbilityManagerServiceClientProxy::GetInstalledAbilities()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -693,12 +614,12 @@ std::vector<AccessibilityAbilityInfo> AccessibleAbilityManagerServiceClientProxy
         HILOG_ERROR("fail, connection write Token error");
         return it;
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::GET_INSTALLED), data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Interrupt fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_INSTALLED,
+        data, reply, option)) {
+        HILOG_ERROR("GetInstalledAbilities fail");
         return it;
     }
+
     int dev_num = reply.ReadInt32();
     for (int i = dev_num; i > 0; i--) {
         std::unique_ptr<AccessibilityAbilityInfo> dev(reply.ReadParcelable<AccessibilityAbilityInfo>());
@@ -714,8 +635,6 @@ std::vector<AccessibilityAbilityInfo> AccessibleAbilityManagerServiceClientProxy
 bool AccessibleAbilityManagerServiceClientProxy::DisableAbilities(std::map<std::string, AppExecFwk::ElementName> it)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -733,11 +652,9 @@ bool AccessibleAbilityManagerServiceClientProxy::DisableAbilities(std::map<std::
             return false;
         }
     }
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(IAccessibleAbilityManagerServiceClient::Message::DISABLE_ABILITIES),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("SetEnabledObj fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::DISABLE_ABILITIES,
+        data, reply, option)) {
+        HILOG_ERROR("DisableAbilities fail");
         return false;
     }
     return true;
@@ -746,8 +663,6 @@ bool AccessibleAbilityManagerServiceClientProxy::DisableAbilities(std::map<std::
 int AccessibleAbilityManagerServiceClientProxy::GetActiveWindow()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -757,12 +672,9 @@ int AccessibleAbilityManagerServiceClientProxy::GetActiveWindow()
         return false;
     }
 
-    error = Remote()->SendRequest(
-        static_cast<uint32_t>(
-            IAccessibleAbilityManagerServiceClient::Message::GET_ACTIVE_WINDOW),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("GetActiveWindow fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::GET_ACTIVE_WINDOW,
+        data, reply, option)) {
+        HILOG_ERROR("GetActiveWindow fail");
         return false;
     }
     return reply.ReadInt32();
@@ -771,8 +683,6 @@ int AccessibleAbilityManagerServiceClientProxy::GetActiveWindow()
 bool AccessibleAbilityManagerServiceClientProxy::RegisterUITestAbilityConnectionClient(const sptr<IRemoteObject>& obj)
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -787,11 +697,9 @@ bool AccessibleAbilityManagerServiceClientProxy::RegisterUITestAbilityConnection
         return false;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>
-        (IAccessibleAbilityManagerServiceClient::Message::REGISTER_UITEST_ABILITY_CONNECTION_CLIENT),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Interrupt fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::REGISTER_UITEST_ABILITY_CONNECTION_CLIENT,
+        data, reply, option)) {
+        HILOG_ERROR("RegisterUITestAbilityConnectionClient fail");
         return false;
     }
     return reply.ReadBool();
@@ -800,8 +708,6 @@ bool AccessibleAbilityManagerServiceClientProxy::RegisterUITestAbilityConnection
 bool AccessibleAbilityManagerServiceClientProxy::DeregisterUITestAbilityConnectionClient()
 {
     HILOG_DEBUG("start");
-
-    int error = NO_ERROR;
     MessageParcel data;
     MessageParcel reply;
     MessageOption option;
@@ -811,11 +717,9 @@ bool AccessibleAbilityManagerServiceClientProxy::DeregisterUITestAbilityConnecti
         return false;
     }
 
-    error = Remote()->SendRequest(static_cast<uint32_t>
-        (IAccessibleAbilityManagerServiceClient::Message::DEREGISTER_UITEST_ABILITY_CONNECTION_CLIENT),
-        data, reply, option);
-    if (error != NO_ERROR) {
-        HILOG_ERROR("Interrupt fail, error: %{public}d", error);
+    if (!SendTransactCmd(IAccessibleAbilityManagerServiceClient::Message::DEREGISTER_UITEST_ABILITY_CONNECTION_CLIENT,
+        data, reply, option)) {
+        HILOG_ERROR("DeregisterUITestAbilityConnectionClient fail");
         return false;
     }
     return reply.ReadBool();
diff --git a/frameworks/asacfwk/src/accessible_ability_manager_service_state_proxy.cpp b/frameworks/asacfwk/src/accessible_ability_manager_service_state_proxy.cpp
index ec85c7d2..25508075 100644
--- a/frameworks/asacfwk/src/accessible_ability_manager_service_state_proxy.cpp
+++ b/frameworks/asacfwk/src/accessible_ability_manager_service_state_proxy.cpp
@@ -56,7 +56,13 @@ void AccessibleAbilityManagerServiceStateProxy::OnStateChanged(const uint32_t st
         return;
     }
 
-    error = Remote()->SendRequest(
+    sptr<IRemoteObject> remote = Remote();
+    if (!remote) {
+        HILOG_ERROR("fail to send transact cmd due to remote object");
+        return;
+    }
+
+    error = remote->SendRequest(
         static_cast<uint32_t>(IAccessibleAbilityManagerServiceState::Message::ON_STATE_CHANGED),
         data, reply, option);
     if (error != NO_ERROR) {
diff --git a/frameworks/asacfwk/src/accessible_ability_manager_service_state_stub.cpp b/frameworks/asacfwk/src/accessible_ability_manager_service_state_stub.cpp
index e4579cbf..4eee9ae6 100644
--- a/frameworks/asacfwk/src/accessible_ability_manager_service_state_stub.cpp
+++ b/frameworks/asacfwk/src/accessible_ability_manager_service_state_stub.cpp
@@ -30,7 +30,7 @@ AccessibleAbilityManagerServiceStateStub::AccessibleAbilityManagerServiceStateSt
 int AccessibleAbilityManagerServiceStateStub::OnRemoteRequest(uint32_t code, MessageParcel &data,
     MessageParcel &reply, MessageOption &option)
 {
-    HILOG_DEBUG("AccessibleAbilityManagerServiceStateStub::OnRemoteRequest, cmd = %{public}d, flags= %{public}d",
+    HILOG_DEBUG("AccessibleAbilityManagerServiceStateStub::OnRemoteRequest, cmd = %{public}u, flags= %{public}d",
         code, option.GetFlags());
     std::u16string descriptor = AccessibleAbilityManagerServiceStateStub::GetDescriptor();
     std::u16string remoteDescriptor = data.ReadInterfaceToken();
diff --git a/frameworks/asacfwk/src/accessible_ability_manager_service_stub.cpp b/frameworks/asacfwk/src/accessible_ability_manager_service_stub.cpp
index 1641857e..774be911 100644
--- a/frameworks/asacfwk/src/accessible_ability_manager_service_stub.cpp
+++ b/frameworks/asacfwk/src/accessible_ability_manager_service_stub.cpp
@@ -97,13 +97,13 @@ AccessibleAbilityManagerServiceClientStub::~AccessibleAbilityManagerServiceClien
 int AccessibleAbilityManagerServiceClientStub::OnRemoteRequest(
     uint32_t code, MessageParcel& data, MessageParcel& reply, MessageOption& option)
 {
-    HILOG_DEBUG("AccessibleAbilityManagerServiceClientStub::OnRemoteRequest, cmd = %{public}d, flags= %{public}d",
+    HILOG_DEBUG("AccessibleAbilityManagerServiceClientStub::OnRemoteRequest, cmd = %{public}u, flags= %{public}d",
         code,
         option.GetFlags());
     std::u16string descriptor = AccessibleAbilityManagerServiceClientStub::GetDescriptor();
     std::u16string remoteDescriptor = data.ReadInterfaceToken();
     if (descriptor != remoteDescriptor) {
-        HILOG_INFO("local descriptor is not equal to remote");
+        HILOG_ERROR("local descriptor is not equal to remote");
         return ERR_INVALID_STATE;
     }
 
@@ -354,8 +354,8 @@ ErrCode AccessibleAbilityManagerServiceClientStub::HandleSetEnabledObj(MessagePa
         }
         temp.push_back(*iter);
     }
-    for (int i = 0; i < dev_num; i++) {
-        it.insert(make_pair(temp[i].GetURI(), temp[i]));
+    for (int j = 0; j < dev_num; j++) {
+        it.insert(make_pair(temp[j].GetURI(), temp[j]));
     }
     SetEnabledObj(it);
 
@@ -417,8 +417,8 @@ ErrCode AccessibleAbilityManagerServiceClientStub::HandleDisableAbilities(Messag
         }
         temp.push_back(*iter);
     }
-    for (int i = 0; i < dev_num; i++) {
-        it.insert(make_pair(temp[i].GetURI(), temp[i]));
+    for (int j = 0; j < dev_num; j++) {
+        it.insert(make_pair(temp[j].GetURI(), temp[j]));
     }
     DisableAbilities(it);
 
diff --git a/interfaces/kits/napi/src/napi_accessibility_gesture_pos.cpp b/interfaces/kits/napi/src/napi_accessibility_gesture_pos.cpp
index 88702f45..026bf321 100644
--- a/interfaces/kits/napi/src/napi_accessibility_gesture_pos.cpp
+++ b/interfaces/kits/napi/src/napi_accessibility_gesture_pos.cpp
@@ -44,7 +44,7 @@ napi_value NGesturePos::JSPosConstructor(napi_env env, napi_callback_info info)
     uint32_t x = 0, y = 0;
     ParseUint32(env, x, argv[PARAM0]);
     ParseUint32(env, y, argv[PARAM1]);
-    HILOG_INFO("JSPosConstructor, x:%{public}d, y:%{public}d", x, y);
+    HILOG_INFO("JSPosConstructor, x:%{public}u, y:%{public}u", x, y);
     napi_set_named_property(env, jsthis, "posX", argv[PARAM0]);
     napi_set_named_property(env, jsthis, "posY", argv[PARAM1]);
 
diff --git a/interfaces/kits/napi/src/napi_accessibility_info.cpp b/interfaces/kits/napi/src/napi_accessibility_info.cpp
index 2109ec8e..253b3e10 100644
--- a/interfaces/kits/napi/src/napi_accessibility_info.cpp
+++ b/interfaces/kits/napi/src/napi_accessibility_info.cpp
@@ -127,6 +127,7 @@ napi_value NElementInfo::ExecuteAction(napi_env env, napi_callback_info info)
 
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -208,6 +209,7 @@ napi_value NElementInfo::GetByContent(napi_env env, napi_callback_info info)
 
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -297,6 +299,7 @@ napi_value NElementInfo::GetFocus(napi_env env, napi_callback_info info)
 
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -403,6 +406,7 @@ napi_value NElementInfo::GetNext(napi_env env, napi_callback_info info)
 
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -484,6 +488,7 @@ napi_value NElementInfo::GetChild(napi_env env, napi_callback_info info)
 
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -562,6 +567,7 @@ napi_value NElementInfo::GetParent(napi_env env, napi_callback_info info)
 
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
diff --git a/interfaces/kits/napi/src/napi_accessibility_system_ability_client.cpp b/interfaces/kits/napi/src/napi_accessibility_system_ability_client.cpp
index 7f1c1c20..c6665c34 100644
--- a/interfaces/kits/napi/src/napi_accessibility_system_ability_client.cpp
+++ b/interfaces/kits/napi/src/napi_accessibility_system_ability_client.cpp
@@ -79,6 +79,7 @@ napi_value NAccessibilityClient::IsOpenAccessibility(napi_env env, napi_callback
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -106,10 +107,7 @@ napi_value NAccessibilityClient::IsOpenTouchExploration(napi_env env, napi_callb
     napi_value resource = nullptr;
     napi_create_string_utf8(env, "IsOpenTouchExploration", NAPI_AUTO_LENGTH, &resource);
 
-    napi_create_async_work(
-        env,
-        nullptr,
-        resource,
+    napi_create_async_work(env, nullptr, resource,
         // execute async to call c++ function
         [](napi_env env, void* data) {
             NAccessibilitySystemAbilityClient* callbackInfo = (NAccessibilitySystemAbilityClient*)data;
@@ -138,6 +136,7 @@ napi_value NAccessibilityClient::IsOpenTouchExploration(napi_env env, napi_callb
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -200,6 +199,7 @@ napi_value NAccessibilityClient::GetAbilityList(napi_env env, napi_callback_info
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -269,6 +269,7 @@ napi_value NAccessibilityClient::SendEvent(napi_env env, napi_callback_info info
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -443,6 +444,7 @@ napi_value NAccessibilityClient::GetCaptionProperty(napi_env env, napi_callback_
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -502,6 +504,7 @@ napi_value NAccessibilityClient::SetCaptionProperty(napi_env env, napi_callback_
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -561,6 +564,7 @@ napi_value NAccessibilityClient::GetCaptionState(napi_env env, napi_callback_inf
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -589,10 +593,7 @@ napi_value NAccessibilityClient::SetCaptionState(napi_env env, napi_callback_inf
     napi_value resource = nullptr;
     napi_create_string_utf8(env, "SetCaptionState", NAPI_AUTO_LENGTH, &resource);
 
-    napi_create_async_work(
-        env,
-        nullptr,
-        resource,
+    napi_create_async_work(env, nullptr, resource,
         // execute async to call c++ function
         [](napi_env env, void* data) {
             NAccessibilitySystemAbilityClient* callbackInfo = (NAccessibilitySystemAbilityClient*)data;
@@ -621,6 +622,7 @@ napi_value NAccessibilityClient::SetCaptionState(napi_env env, napi_callback_inf
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -680,6 +682,7 @@ napi_value NAccessibilityClient::GetEnabled(napi_env env, napi_callback_info inf
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -739,6 +742,7 @@ napi_value NAccessibilityClient::SetEnabled(napi_env env, napi_callback_info inf
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -798,6 +802,7 @@ napi_value NAccessibilityClient::GetTouchGuideState(napi_env env, napi_callback_
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -857,6 +862,7 @@ napi_value NAccessibilityClient::SetTouchGuideState(napi_env env, napi_callback_
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -916,6 +922,7 @@ napi_value NAccessibilityClient::GetGestureState(napi_env env, napi_callback_inf
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -975,6 +982,7 @@ napi_value NAccessibilityClient::SetGestureState(napi_env env, napi_callback_inf
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -1035,6 +1043,7 @@ napi_value NAccessibilityClient::GetKeyEventObserverState(napi_env env, napi_cal
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -1094,6 +1103,7 @@ napi_value NAccessibilityClient::SetKeyEventObserverState(napi_env env, napi_cal
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -1123,10 +1133,7 @@ napi_value NAccessibilityClient::GetInstalled(napi_env env, napi_callback_info i
     napi_value resource = nullptr;
     napi_create_string_utf8(env, "GetInstalled", NAPI_AUTO_LENGTH, &resource);
 
-    napi_create_async_work(
-        env,
-        nullptr,
-        resource,
+    napi_create_async_work(env, nullptr, resource,
         // execute async to call c++ function
         [](napi_env env, void* data) {
             NAccessibilitySystemAbilityClient* callbackInfo = (NAccessibilitySystemAbilityClient*)data;
@@ -1155,6 +1162,7 @@ napi_value NAccessibilityClient::GetInstalled(napi_env env, napi_callback_info i
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -1215,6 +1223,7 @@ napi_value NAccessibilityClient::GetExtensionEnabled(napi_env env, napi_callback
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -1274,6 +1283,7 @@ napi_value NAccessibilityClient::ExtensionEnabled(napi_env env, napi_callback_in
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -1333,6 +1343,7 @@ napi_value NAccessibilityClient::ExtensionDisabled(napi_env env, napi_callback_i
             }
             napi_delete_async_work(env, callbackInfo->work_);
             delete callbackInfo;
+            callbackInfo = nullptr;
         },
         (void*)callbackInfo,
         &callbackInfo->work_);
@@ -1391,6 +1402,7 @@ napi_value NAccessibilityClient::GetCaptionsManager(napi_env env, napi_callback_
     napi_set_named_property(env, result, "style", keyCode);
 
     delete callbackInfo;
+    callbackInfo = nullptr;
     return result;
 }
 
diff --git a/interfaces/kits/napi/src/napi_accessibility_utils.cpp b/interfaces/kits/napi/src/napi_accessibility_utils.cpp
index 551a9105..8e67154a 100644
--- a/interfaces/kits/napi/src/napi_accessibility_utils.cpp
+++ b/interfaces/kits/napi/src/napi_accessibility_utils.cpp
@@ -69,7 +69,7 @@ bool ParseUint32(napi_env env, uint32_t& param, napi_value args)
     napi_valuetype valuetype;
     status = napi_typeof(env, args, &valuetype);
     if (status != napi_ok) {
-        HILOG_INFO("napi_typeof error and status is %{public}d", status);
+        HILOG_ERROR("napi_typeof error and status is %{public}d", status);
         return false;
     }
     HILOG_INFO("param=%{public}d.", valuetype);
@@ -258,10 +258,11 @@ static void ConvertAccessibleAbilityInfoToJS(napi_env env, napi_value& result, A
     NAPI_CALL_RETURN_VOID(env, napi_create_array(env, &nAbilityType));
     uint32_t abilityTypesValue = info.GetAccessibilityAbilityType();
     std::vector<std::string> abilityTypes = ParseAbilityTypesToVec(abilityTypesValue);
-    for (size_t idx = 0; idx < abilityTypes.size(); idx++) {
+    for (size_t idxType = 0; idxType < abilityTypes.size(); idxType++) {
         napi_value nType;
-        NAPI_CALL_RETURN_VOID(env, napi_create_string_utf8(env, abilityTypes[idx].c_str(), NAPI_AUTO_LENGTH, &nType));
-        NAPI_CALL_RETURN_VOID(env, napi_set_element(env, nAbilityType, idx, nType));
+        NAPI_CALL_RETURN_VOID(env, napi_create_string_utf8(env, abilityTypes[idxType].c_str(),
+            NAPI_AUTO_LENGTH, &nType));
+        NAPI_CALL_RETURN_VOID(env, napi_set_element(env, nAbilityType, idxType, nType));
     }
     NAPI_CALL_RETURN_VOID(env, napi_set_named_property(env, result, "abilityTypes", nAbilityType));
 
@@ -269,10 +270,11 @@ static void ConvertAccessibleAbilityInfoToJS(napi_env env, napi_value& result, A
     NAPI_CALL_RETURN_VOID(env, napi_create_array(env, &nCapabilities));
     uint32_t capabilitiesValue = info.GetCapabilityValues();
     std::vector<std::string> capabilities = ParseCapabilitiesToVec(capabilitiesValue);
-    for (size_t idx = 0; idx < capabilities.size(); idx++) {
-        napi_value nType;
-        NAPI_CALL_RETURN_VOID(env, napi_create_string_utf8(env, capabilities[idx].c_str(), NAPI_AUTO_LENGTH, &nType));
-        NAPI_CALL_RETURN_VOID(env, napi_set_element(env, nCapabilities, idx, nType));
+    for (size_t idxCap = 0; idxCap < capabilities.size(); idxCap++) {
+        napi_value nCap;
+        NAPI_CALL_RETURN_VOID(env, napi_create_string_utf8(env, capabilities[idxCap].c_str(),
+            NAPI_AUTO_LENGTH, &nCap));
+        NAPI_CALL_RETURN_VOID(env, napi_set_element(env, nCapabilities, idxCap, nCap));
     }
     NAPI_CALL_RETURN_VOID(env, napi_set_named_property(env, result, "capabilities", nCapabilities));
 
@@ -285,10 +287,10 @@ static void ConvertAccessibleAbilityInfoToJS(napi_env env, napi_value& result, A
     NAPI_CALL_RETURN_VOID(env, napi_create_array(env, &nEventTypes));
     uint32_t eventTypesValue = info.GetEventTypes();
     std::vector<std::string> eventTypes = ParseEventTypesToVec(eventTypesValue);
-    for (size_t idx = 0; idx < eventTypes.size(); idx++) {
-        napi_value nType;
-        NAPI_CALL_RETURN_VOID(env, napi_create_string_utf8(env, eventTypes[idx].c_str(), NAPI_AUTO_LENGTH, &nType));
-        NAPI_CALL_RETURN_VOID(env, napi_set_element(env, nEventTypes, idx, nType));
+    for (size_t idxEve = 0; idxEve < eventTypes.size(); idxEve++) {
+        napi_value nEve;
+        NAPI_CALL_RETURN_VOID(env, napi_create_string_utf8(env, eventTypes[idxEve].c_str(), NAPI_AUTO_LENGTH, &nEve));
+        NAPI_CALL_RETURN_VOID(env, napi_set_element(env, nEventTypes, idxEve, nEve));
     }
     NAPI_CALL_RETURN_VOID(env, napi_set_named_property(env, result, "eventTypes", nEventTypes));
 
@@ -847,11 +849,11 @@ void ConvertElementInfoToJS(napi_env env, napi_value result, const Accessibility
     NAPI_CALL_RETURN_VOID(env, napi_create_array(env, &nOperations));
     std::vector<AccessibleAction> operations = elementInfo.GetActionList();
     size_t operationCount = operations.size();
-    for (size_t idx = 0; idx < operationCount; idx++) {
+    for (size_t i = 0; i < operationCount; i++) {
         napi_value nOp;
         napi_create_object(env, &nOp);
-        ConvertOperationToJS(env, nOp, operations[idx]);
-        NAPI_CALL_RETURN_VOID(env, napi_set_element(env, nOperations, idx, nOp));
+        ConvertOperationToJS(env, nOp, operations[i]);
+        NAPI_CALL_RETURN_VOID(env, napi_set_element(env, nOperations, i, nOp));
     }
     NAPI_CALL_RETURN_VOID(env, napi_set_named_property(env, result, "operations", nOperations));
 
@@ -1238,9 +1240,9 @@ void ConvertActionArgsJSToNAPI(
             napi_create_string_utf8(env, "htmlItem", NAPI_AUTO_LENGTH, &propertyNameValue);
             napi_has_property(env, object, propertyNameValue, &hasProperty);
             if (hasProperty) {
-                napi_value value = nullptr;
-                napi_get_property(env, object, propertyNameValue, &value);
-                str = GetStringFromNAPI(env, value);
+                napi_value htmlItemValue = nullptr;
+                napi_get_property(env, object, propertyNameValue, &htmlItemValue);
+                str = GetStringFromNAPI(env, htmlItemValue);
                 args.insert(std::pair<std::string, std::string>("htmlItem", str.c_str()));
             }
             break;
@@ -1249,9 +1251,9 @@ void ConvertActionArgsJSToNAPI(
             napi_create_string_utf8(env, "textMoveUnit", NAPI_AUTO_LENGTH, &propertyNameValue);
             napi_has_property(env, object, propertyNameValue, &hasProperty);
             if (hasProperty) {
-                napi_value value = nullptr;
-                napi_get_property(env, object, propertyNameValue, &value);
-                str = GetStringFromNAPI(env, value);
+                napi_value textMoveUnitValue = nullptr;
+                napi_get_property(env, object, propertyNameValue, &textMoveUnitValue);
+                str = GetStringFromNAPI(env, textMoveUnitValue);
                 args.insert(std::pair<std::string, std::string>("textMoveUnit", str.c_str()));
             }
             break;
@@ -1259,17 +1261,17 @@ void ConvertActionArgsJSToNAPI(
             napi_create_string_utf8(env, "selectTextBegin", NAPI_AUTO_LENGTH, &propertyNameValue);
             napi_has_property(env, object, propertyNameValue, &hasProperty);
             if (hasProperty) {
-                napi_value value = nullptr;
-                napi_get_property(env, object, propertyNameValue, &value);
-                str = GetStringFromNAPI(env, value);
+                napi_value selectTextBeginValue = nullptr;
+                napi_get_property(env, object, propertyNameValue, &selectTextBeginValue);
+                str = GetStringFromNAPI(env, selectTextBeginValue);
                 args.insert(std::pair<std::string, std::string>("selectTextBegin", str.c_str()));
             }
             napi_create_string_utf8(env, "selectTextEnd", NAPI_AUTO_LENGTH, &propertyNameValue);
             napi_has_property(env, object, propertyNameValue, &hasProperty);
             if (hasProperty) {
-                napi_value value = nullptr;
-                napi_get_property(env, object, propertyNameValue, &value);
-                str = GetStringFromNAPI(env, value);
+                napi_value selectTextEndValue = nullptr;
+                napi_get_property(env, object, propertyNameValue, &selectTextEndValue);
+                str = GetStringFromNAPI(env, selectTextEndValue);
                 args.insert(std::pair<std::string, std::string>("selectTextEnd", str.c_str()));
             }
             break;
@@ -1277,9 +1279,9 @@ void ConvertActionArgsJSToNAPI(
             napi_create_string_utf8(env, "setText", NAPI_AUTO_LENGTH, &propertyNameValue);
             napi_has_property(env, object, propertyNameValue, &hasProperty);
             if (hasProperty) {
-                napi_value value = nullptr;
-                napi_get_property(env, object, propertyNameValue, &value);
-                str = GetStringFromNAPI(env, value);
+                napi_value setTextValue = nullptr;
+                napi_get_property(env, object, propertyNameValue, &setTextValue);
+                str = GetStringFromNAPI(env, setTextValue);
                 args.insert(std::pair<std::string, std::string>("setText", str.c_str()));
             }
             break;
@@ -1311,18 +1313,18 @@ bool ConvertEventInfoJSToNAPI(napi_env env, napi_value object, AccessibilityEven
     napi_create_string_utf8(env, "windowUpdateType", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value windowUpdateTypeValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &windowUpdateTypeValue);
+        str = GetStringFromNAPI(env, windowUpdateTypeValue);
         eventInfo.SetWindowChangeTypes(ConvertStringToWindowUpdateTypes(str));
     }
 
     napi_create_string_utf8(env, "bundleName", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value bundleNameValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &bundleNameValue);
+        str = GetStringFromNAPI(env, bundleNameValue);
         if (str == "") {
             return false;
         }
@@ -1334,9 +1336,9 @@ bool ConvertEventInfoJSToNAPI(napi_env env, napi_value object, AccessibilityEven
     napi_create_string_utf8(env, "componentType", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value componentTypeValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &componentTypeValue);
+        str = GetStringFromNAPI(env, componentTypeValue);
         eventInfo.SetComponentType(str);
     }
 
@@ -1344,54 +1346,54 @@ bool ConvertEventInfoJSToNAPI(napi_env env, napi_value object, AccessibilityEven
     napi_create_string_utf8(env, "timeStamp", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int64(env, value, &timestamp);
+        napi_value timeStampValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &timeStampValue);
+        napi_get_value_int64(env, timeStampValue, &timestamp);
         eventInfo.SetTimeStamp(timestamp);
     }
 
     napi_create_string_utf8(env, "windowId", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int32(env, value, &dataValue);
+        napi_value windowIdValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &windowIdValue);
+        napi_get_value_int32(env, windowIdValue, &dataValue);
         eventInfo.SetWindowId(dataValue);
     }
 
     napi_create_string_utf8(env, "pageId", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int32(env, value, &dataValue);
+        napi_value pageIdValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &pageIdValue);
+        napi_get_value_int32(env, pageIdValue, &dataValue);
         eventInfo.SetPageId(dataValue);
     }
 
     napi_create_string_utf8(env, "componentId", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int32(env, value, &dataValue);
+        napi_value componentIdValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &componentIdValue);
+        napi_get_value_int32(env, componentIdValue, &dataValue);
         eventInfo.SetSource(dataValue);
     }
 
     napi_create_string_utf8(env, "description", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value descriptionValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &descriptionValue);
+        str = GetStringFromNAPI(env, descriptionValue);
         eventInfo.SetDescription(str);
     }
 
     napi_create_string_utf8(env, "triggerAction", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value triggerActionValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &triggerActionValue);
+        str = GetStringFromNAPI(env, triggerActionValue);
         eventInfo.SetTriggerAction(ConvertStringToAccessibleOperationType(str));
         if (eventInfo.GetTriggerAction() == ACCESSIBILITY_ACTION_INVALID) {
             return false;
@@ -1403,22 +1405,22 @@ bool ConvertEventInfoJSToNAPI(napi_env env, napi_value object, AccessibilityEven
     napi_create_string_utf8(env, "textMoveUnit", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value textMoveUnitValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &textMoveUnitValue);
+        str = GetStringFromNAPI(env, textMoveUnitValue);
         eventInfo.SetTextMovementStep(ConvertStringToTextMoveStep(str));
     }
 
     napi_create_string_utf8(env, "contents", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
+        napi_value contentsValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &contentsValue);
         napi_value data = nullptr;
         size_t dataLen = 0;
-        napi_get_array_length(env, value, &dataLen);
+        napi_get_array_length(env, contentsValue, &dataLen);
         for (int i = 0; i < int(dataLen); i++) {
-            napi_get_element(env, value, i, &data);
+            napi_get_element(env, contentsValue, i, &data);
             str = GetStringFromNAPI(env, data);
             eventInfo.AddContent(str);
         }
@@ -1427,63 +1429,63 @@ bool ConvertEventInfoJSToNAPI(napi_env env, napi_value object, AccessibilityEven
     napi_create_string_utf8(env, "lastContent", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value lastContentValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &lastContentValue);
+        str = GetStringFromNAPI(env, lastContentValue);
         eventInfo.SetLatestContent(str);
     }
 
     napi_create_string_utf8(env, "beginIndex", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int32(env, value, &dataValue);
+        napi_value beginIndexValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &beginIndexValue);
+        napi_get_value_int32(env, beginIndexValue, &dataValue);
         eventInfo.SetBeginIndex(dataValue);
     }
 
     napi_create_string_utf8(env, "currentIndex", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int32(env, value, &dataValue);
+        napi_value currentIndexValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &currentIndexValue);
+        napi_get_value_int32(env, currentIndexValue, &dataValue);
         eventInfo.SetCurrentIndex(dataValue);
     }
 
     napi_create_string_utf8(env, "endIndex", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int32(env, value, &dataValue);
+        napi_value endIndexValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &endIndexValue);
+        napi_get_value_int32(env, endIndexValue, &dataValue);
         eventInfo.SetEndIndex(dataValue);
     }
 
     napi_create_string_utf8(env, "itemCount", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int32(env, value, &dataValue);
+        napi_value itemCountValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &itemCountValue);
+        napi_get_value_int32(env, itemCountValue, &dataValue);
         eventInfo.SetItemCounts(dataValue);
     }
 
     napi_create_string_utf8(env, "categoryNotification", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value categoryNotificationValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &categoryNotificationValue);
+        str = GetStringFromNAPI(env, categoryNotificationValue);
         eventInfo.SetNotificationInfo(ConvertStringToNotificationCategory(str));
     }
 
     napi_create_string_utf8(env, "gestureType", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        str = GetStringFromNAPI(env, value);
+        napi_value gestureTypeValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &gestureTypeValue);
+        str = GetStringFromNAPI(env, gestureTypeValue);
         eventInfo.SetGestureType(ConvertStringToGestureType(str));
     }
     return true;
@@ -1499,18 +1501,18 @@ static void ConvertGesturePathPositionJSToNAPI(
     napi_create_string_utf8(env, "posX", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_double(env, value, &position);
+        napi_value valueX = nullptr;
+        napi_get_property(env, object, propertyNameValue, &valueX);
+        napi_get_value_double(env, valueX, &position);
         gesturePathPosition.SetPositionX((float)position);
     }
 
     napi_create_string_utf8(env, "posY", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_double(env, value, &position);
+        napi_value valueY = nullptr;
+        napi_get_property(env, object, propertyNameValue, &valueY);
+        napi_get_value_double(env, valueY, &position);
         gesturePathPosition.SetPositionY((float)position);
     }
 }
@@ -1524,18 +1526,18 @@ static void ConvertGesturePathJSToNAPI(napi_env env, napi_value object, GestureP
     napi_create_string_utf8(env, "startPos", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        ConvertGesturePathPositionJSToNAPI(env, value, gesturePathPosition);
+        napi_value startValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &startValue);
+        ConvertGesturePathPositionJSToNAPI(env, startValue, gesturePathPosition);
         gesturePath.SetStartPosition(gesturePathPosition);
     }
 
     napi_create_string_utf8(env, "endPos", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        ConvertGesturePathPositionJSToNAPI(env, value, gesturePathPosition);
+        napi_value endValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &endValue);
+        ConvertGesturePathPositionJSToNAPI(env, endValue, gesturePathPosition);
         gesturePath.SetEndPosition(gesturePathPosition);
     }
 
@@ -1543,9 +1545,9 @@ static void ConvertGesturePathJSToNAPI(napi_env env, napi_value object, GestureP
     napi_create_string_utf8(env, "durationTime", NAPI_AUTO_LENGTH, &propertyNameValue);
     napi_has_property(env, object, propertyNameValue, &hasProperty);
     if (hasProperty) {
-        napi_value value = nullptr;
-        napi_get_property(env, object, propertyNameValue, &value);
-        napi_get_value_int64(env, value, &durationTime);
+        napi_value timeValue = nullptr;
+        napi_get_property(env, object, propertyNameValue, &timeValue);
+        napi_get_value_int64(env, timeValue, &durationTime);
         gesturePath.SetDurationTime(durationTime);
     }
 }
@@ -1610,9 +1612,9 @@ void ConvertKeyEventToJS(napi_env env, napi_value result, OHOS::MMI::KeyEvent& k
         NAPI_CALL_RETURN_VOID(env, napi_get_boolean(env, key.GetDeviceId(), &deviceId));
         NAPI_CALL_RETURN_VOID(env, napi_set_named_property(env, keyItem, "deviceId", deviceId));
 
-        napi_value keyCode;
-        NAPI_CALL_RETURN_VOID(env, napi_get_boolean(env, key.GetKeyCode(), &keyCode));
-        NAPI_CALL_RETURN_VOID(env, napi_set_named_property(env, keyItem, "keyCode", keyCode));
+        napi_value itemKeyCode;
+        NAPI_CALL_RETURN_VOID(env, napi_get_boolean(env, key.GetKeyCode(), &itemKeyCode));
+        NAPI_CALL_RETURN_VOID(env, napi_set_named_property(env, keyItem, "keyCode", itemKeyCode));
 
         NAPI_CALL_RETURN_VOID(env, napi_set_element(env, keys, idx, keyItem));
         idx++;
@@ -1710,16 +1712,16 @@ uint32_t ConvertColorStringToNumer(std::string colorStr)
             newColorStr += c;
             newColorStr += c;
         }
-        auto value = stoul(newColorStr, nullptr, COLOR_STRING_BASE);
+        auto valueMini = stoul(newColorStr, nullptr, COLOR_STRING_BASE);
         if (newColorStr.length() < COLOR_STRING_SIZE_STANDARD) {
             // no alpha specified, set alpha to 0xff
-            value |= COLOR_ALPHA_MASK;
+            valueMini |= COLOR_ALPHA_MASK;
         } else {
-            auto alpha = value << ALPHA_MOVE;
-            auto rgb = value >> COLOR_MOVE;
-            value = alpha | rgb;
+            auto alphaMini = valueMini << ALPHA_MOVE;
+            auto rgbMini = valueMini >> COLOR_MOVE;
+            valueMini = alphaMini | rgbMini;
         }
-        color = value;
+        color = valueMini;
         return color;
     }
 
diff --git a/services/aams/BUILD.gn b/services/aams/BUILD.gn
index 1a238b77..8ff553df 100755
--- a/services/aams/BUILD.gn
+++ b/services/aams/BUILD.gn
@@ -63,12 +63,9 @@ config("aams_service_config") {
 
   if (target_cpu == "arm") {
     cflags = [ "-DBINDER_IPC_32BIT" ]
-    # cflags_cc = ["-frtti"]
   }
 }
 
-# remove_configs = [ "//build/config/compiler:no_rtti" ]
-
 ohos_shared_library("accessibleabilityms") {
   install_enable = true
 
diff --git a/services/aams/include/accessibility_account_data.h b/services/aams/include/accessibility_account_data.h
index 3f949f04..4f292cdd 100644
--- a/services/aams/include/accessibility_account_data.h
+++ b/services/aams/include/accessibility_account_data.h
@@ -214,6 +214,12 @@ public:
      */
     const std::vector<AccessibilityAbilityInfo> GetAbilitiesByState(AbilityStateType state);
 
+    /**
+     * @brief Get the accessibility ability info of the disabled ability.
+     * @return
+     */
+    const std::vector<AccessibilityAbilityInfo> GetDisableAbilities();
+
     /**
      * @brief Get enable accessibility list.
      * @param
diff --git a/services/aams/include/accessibility_common_event_registry.h b/services/aams/include/accessibility_common_event_registry.h
index ce343973..134d9ee6 100644
--- a/services/aams/include/accessibility_common_event_registry.h
+++ b/services/aams/include/accessibility_common_event_registry.h
@@ -29,6 +29,7 @@ using EventHandle = std::function<void(const OHOS::AAFwk::Want&)>;
 
 namespace OHOS {
 namespace Accessibility {
+#define RETRY_SUBSCRIBER 3
 class AccessibilityCommonEventSubscriber : public EventFwk::CommonEventSubscriber {
 public:
     AccessibilityCommonEventSubscriber(const EventFwk::CommonEventSubscribeInfo &subscriberInfo,
diff --git a/services/aams/src/accessibility_account_data.cpp b/services/aams/src/accessibility_account_data.cpp
index ae80f8e8..b686f146 100644
--- a/services/aams/src/accessibility_account_data.cpp
+++ b/services/aams/src/accessibility_account_data.cpp
@@ -376,22 +376,30 @@ const std::vector<AccessibilityAbilityInfo> AccessibilityAccountData::GetAbiliti
             connectedA11yAbilities_.size(), enabledAbilities.size());
         return enabledAbilities;
     } else if (state == ABILITY_STATE_DISABLE) {
-        std::vector<AccessibilityAbilityInfo> disabledAbilities = installedAbilities_;
-        for (auto enabledAbility : connectedA11yAbilities_) {
-            for (auto itr = disabledAbilities.begin(); itr != disabledAbilities.end();) {
-                if (itr->GetId() == enabledAbility.second->GetAbilityInfo().GetId()) {
-                    disabledAbilities.erase(itr);
-                } else {
-                    itr++;
-                }
-            }
-        }
+        std::vector<AccessibilityAbilityInfo> disabledAbilities = GetDisableAbilities();
+        HILOG_DEBUG("the size of disable abilities is %{public}d", disabledAbilities.size());
         return disabledAbilities;
     } else {
         return installedAbilities_;
     }
 }
 
+const std::vector<AccessibilityAbilityInfo> AccessibilityAccountData::GetDisableAbilities()
+{
+    HILOG_DEBUG("start.");
+    std::vector<AccessibilityAbilityInfo> disabledAbilities = installedAbilities_;
+    for (auto enabledAbility : connectedA11yAbilities_) {
+        for (auto itr = disabledAbilities.begin(); itr != disabledAbilities.end();) {
+            if (itr->GetId() == enabledAbility.second->GetAbilityInfo().GetId()) {
+                disabledAbilities.erase(itr);
+            } else {
+                itr++;
+            }
+        }
+    }
+    return disabledAbilities;
+}
+
 void AccessibilityAccountData::UpdateAccountCapabilities()
 {
     HILOG_DEBUG("start.");
@@ -774,19 +782,18 @@ void AccessibilityAccountData::StringToVector(std::string &stringIn, std::vector
     HILOG_DEBUG("start.");
     int strLength = (int)stringIn.size();
     std::vector<int> position;
-    int wrodCount = 0;
 
     if (strLength == 0) {
         return;
     }
 
-    for (int i = 0; i < strLength; i++) {
-        if (stringIn[i] == ',') {
-            position.push_back(i);
+    for (int j = 0; j < strLength; j++) {
+        if (stringIn[j] == ',') {
+            position.push_back(j);
         }
     }
 
-    wrodCount = (int)position.size();
+    int wrodCount = (int)position.size();
     if ((wrodCount == 0) && (strLength > 0)) {
         vectorResult.push_back(stringIn);
     } else {
@@ -794,7 +801,6 @@ void AccessibilityAccountData::StringToVector(std::string &stringIn, std::vector
         int length = 0;
         for (int i = 0; i <= wrodCount; i++) {
             if (i == 0) {
-                startWrod = 0;
                 length = position[i];
                 vectorResult.push_back(stringIn.substr(startWrod, length)); // first string
             } else if (i < wrodCount) {
diff --git a/services/aams/src/accessibility_common_event_registry.cpp b/services/aams/src/accessibility_common_event_registry.cpp
index 1f707c6d..467446a6 100644
--- a/services/aams/src/accessibility_common_event_registry.cpp
+++ b/services/aams/src/accessibility_common_event_registry.cpp
@@ -74,7 +74,7 @@ bool AccessibilityCommonEventRegistry::RegisterSubscriber()
     accessibilityCommonEventSubscriber_ =
         std::make_shared<AccessibilityCommonEventSubscriber>(subscribeInfo, eventHandles_);
 
-    int retry = 3;
+    int retry = RETRY_SUBSCRIBER;
     do {
         subscribeResult = CommonEventManager::SubscribeCommonEvent(accessibilityCommonEventSubscriber_);
         if (subscribeResult) {
diff --git a/services/aams/src/accessibility_display_manager.cpp b/services/aams/src/accessibility_display_manager.cpp
index 7f7f3e8e..5ce4c987 100644
--- a/services/aams/src/accessibility_display_manager.cpp
+++ b/services/aams/src/accessibility_display_manager.cpp
@@ -57,6 +57,7 @@ void AccessibilityDisplayManager::OnCreate(Rosen::DisplayId did)
 void AccessibilityDisplayManager::OnDestroy(Rosen::DisplayId did)
 {
 }
+
 void AccessibilityDisplayManager::OnChange(Rosen::DisplayId dId)
 {
 }
diff --git a/services/aams/src/accessibility_gesture_recognizer.cpp b/services/aams/src/accessibility_gesture_recognizer.cpp
index 1c73dce5..11e7d66a 100644
--- a/services/aams/src/accessibility_gesture_recognizer.cpp
+++ b/services/aams/src/accessibility_gesture_recognizer.cpp
@@ -29,6 +29,10 @@ GestureHandler::GestureHandler(const std::shared_ptr<AppExecFwk::EventRunner> &r
 void GestureHandler::ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event)
 {
     HILOG_DEBUG();
+    if (!event) {
+        HILOG_ERROR("event is null");
+        return;
+    }
 
     switch (event->GetInnerEventId()) {
         case AccessibilityGestureRecognizer::LONG_PRESS_MSG:
@@ -179,7 +183,8 @@ bool AccessibilityGestureRecognizer::HandleTouchMoveEvent(MMI::PointerEvent &eve
             isDoubleTap_ = false;
             if (!isGestureStarted_) {
                 isGestureStarted_ = true;
-                return listener_->OnStarted();
+                listener_->OnStarted();
+                return false;
             }
         } else if (!isFirstTapUp_) {
             int64_t durationTime = eventTime - startTime_;
diff --git a/services/aams/src/accessibility_input_interceptor.cpp b/services/aams/src/accessibility_input_interceptor.cpp
index 69ecf33a..c1f20e47 100644
--- a/services/aams/src/accessibility_input_interceptor.cpp
+++ b/services/aams/src/accessibility_input_interceptor.cpp
@@ -49,7 +49,8 @@ AccessibilityInputInterceptor::AccessibilityInputInterceptor()
     keyEventTransmitters_ = nullptr;
     aams_ = DelayedSingleton<AccessibleAbilityManagerService>::GetInstance();
     if (!aams_) {
-        HILOG_DEBUG("aams_ is null.");
+        HILOG_ERROR("aams_ is null.");
+        return;
     }
     inputManager_ = MMI::InputManager::GetInstance();
     eventHandler_ = std::make_shared<AppExecFwk::EventHandler>(aams_->GetMainRunner());
@@ -113,7 +114,7 @@ void AccessibilityInputInterceptor::SetAvailableFunctions(uint32_t availableFunc
 
 void AccessibilityInputInterceptor::CreateTransmitters()
 {
-    HILOG_DEBUG("function[%{public}d].", availableFunctions_);
+    HILOG_DEBUG("function[%{public}u].", availableFunctions_);
 
     if (!availableFunctions_) {
         DestroyInterceptor();
@@ -201,6 +202,7 @@ void AccessibilityInputInterceptor::InterceptKeyEventCallback(std::shared_ptr<MM
 
     if (!instance_ || !instance_->eventHandler_) {
         HILOG_ERROR("eventHandler is nullptr.");
+        return;
     }
     auto task = std::bind(&AccessibilityInputInterceptor::ProcessKeyEvent, instance_, keyEvent);
     instance_->eventHandler_->PostTask(task, AppExecFwk::EventQueue::Priority::LOW);
diff --git a/services/aams/src/accessibility_interaction_bridge.cpp b/services/aams/src/accessibility_interaction_bridge.cpp
index 9fe7bb1b..ca98539c 100644
--- a/services/aams/src/accessibility_interaction_bridge.cpp
+++ b/services/aams/src/accessibility_interaction_bridge.cpp
@@ -92,7 +92,7 @@ bool Intersect(Rect& focus, Rect source)
     int maxx = std::min(focus.GetRightBottomXScreenPostion(), source.GetRightBottomXScreenPostion());
     int maxy = std::min(focus.GetRightBottomYScreenPostion(), source.GetRightBottomYScreenPostion());
     if ((minx > maxx) || (miny > maxy)) {
-        HILOG_DEBUG("The two Rects do not intersect");
+        HILOG_ERROR("The two Rects do not intersect");
         return false;
     }
     focus.SetLeftTopScreenPostion(minx, miny);
@@ -125,7 +125,7 @@ bool AccessibilityInteractionBridge::GetPointerItermOfAccessibilityFocusClick(MM
     auto focus = FindFocusedElementInfo();
     auto focusRect = focus.GetRectInScreen();
     float denominator = 2.0;
-    /* Apply magnification if needed. */
+    // Apply magnification if needed.
 
     // Intersect with window
     auto& windowManager = AccessibilityWindowInfoManager::GetInstance();
diff --git a/services/aams/src/accessibility_touchEvent_injector.cpp b/services/aams/src/accessibility_touchEvent_injector.cpp
index 076d6417..e315552b 100644
--- a/services/aams/src/accessibility_touchEvent_injector.cpp
+++ b/services/aams/src/accessibility_touchEvent_injector.cpp
@@ -18,9 +18,9 @@
 
 namespace OHOS {
 namespace Accessibility {
-const int value_1000 = 1000;
-const int value_1000000 = 1000000;
-const int MS_TO_US = 1000;
+const int g_value_1000 = 1000;
+const int g_value_1000000 = 1000000;
+const int g_msToUs = 1000;
 TouchInjectHandler::TouchInjectHandler(const std::shared_ptr<AppExecFwk::EventRunner> &runner,
     TouchEventInjector &server) : AppExecFwk::EventHandler(runner), server_(server)
 {
@@ -96,7 +96,7 @@ void TouchEventInjector::GetTapsEvents(int64_t startTime)
         float py = gesturePath_[i].GetStartPosition().GetPositionY();
         pointer.SetGlobalX(px);
         pointer.SetGlobalY(py);
-        pointer.SetDownTime(downTime * MS_TO_US);
+        pointer.SetDownTime(downTime * g_msToUs);
         event = obtainTouchEvent(MMI::PointerEvent::POINTER_ACTION_DOWN, pointer, downTime);
         HILOG_INFO("append down event");
         injectedEvents_.push_back(event);
@@ -107,7 +107,7 @@ void TouchEventInjector::GetTapsEvents(int64_t startTime)
         py = gesturePath_[i].GetEndPosition().GetPositionY();
         pointer.SetGlobalX(px);
         pointer.SetGlobalY(py);
-        pointer.SetDownTime(downTime * MS_TO_US);
+        pointer.SetDownTime(downTime * g_msToUs);
         event = obtainTouchEvent(MMI::PointerEvent::POINTER_ACTION_UP, pointer, nowTime);
         HILOG_INFO("append up event");
         injectedEvents_.push_back(event);
@@ -118,7 +118,7 @@ void TouchEventInjector::GetTapsEvents(int64_t startTime)
 
 void TouchEventInjector::GetMovesEvents(int64_t startTime)
 {
-    HILOG_INFO("TouchEventInjector::GetTapsEvents: start");
+    HILOG_INFO("TouchEventInjector::GetMovesEvents: start");
     std::shared_ptr<MMI::PointerEvent> event;
     MMI::PointerEvent::PointerItem pointer = {};
     int64_t downTime = startTime;
@@ -129,7 +129,7 @@ void TouchEventInjector::GetMovesEvents(int64_t startTime)
     pointer.SetPointerId(1);
     pointer.SetGlobalX(px);
     pointer.SetGlobalY(py);
-    pointer.SetDownTime(downTime * MS_TO_US);
+    pointer.SetDownTime(downTime * g_msToUs);
     event = obtainTouchEvent(MMI::PointerEvent::POINTER_ACTION_DOWN, pointer, downTime);
     HILOG_INFO("append down event");
     injectedEvents_.push_back(event);
@@ -138,7 +138,7 @@ void TouchEventInjector::GetMovesEvents(int64_t startTime)
         py = gesturePath_[i].GetEndPosition().GetPositionY();
         pointer.SetGlobalX(px);
         pointer.SetGlobalY(py);
-        pointer.SetDownTime(downTime * MS_TO_US);
+        pointer.SetDownTime(downTime * g_msToUs);
         HILOG_INFO("append move event");
         nowTime += gesturePath_[i].GetDurationTime();
         event = obtainTouchEvent(MMI::PointerEvent::POINTER_ACTION_MOVE, pointer, nowTime);
@@ -149,7 +149,7 @@ void TouchEventInjector::GetMovesEvents(int64_t startTime)
     py = gesturePath_[gesturePath_.size() - 1].GetEndPosition().GetPositionY();
     pointer.SetGlobalX(px);
     pointer.SetGlobalY(py);
-    pointer.SetDownTime(downTime * MS_TO_US);
+    pointer.SetDownTime(downTime * g_msToUs);
     event = obtainTouchEvent(MMI::PointerEvent::POINTER_ACTION_UP, pointer, nowTime);
     HILOG_INFO("append up event");
     injectedEvents_.push_back(event);
@@ -186,9 +186,10 @@ void TouchEventInjector::InjectEventsInner()
         std::shared_ptr<SendEventArgs> parameters = std::make_shared<SendEventArgs>();
         parameters->isLastEvent_ = (i == injectedEvents_.size() - 1) ? true : false;
         parameters->event_ = injectedEvents_[i];
-        int64_t timeout = injectedEvents_[i]->GetActionTime() / MS_TO_US - curTime;
-
-        handler_->SendEvent(SEND_TOUCH_EVENT_MSG, parameters, timeout);
+        if (g_msToUs - curTime != 0) {
+            int64_t timeout = injectedEvents_[i]->GetActionTime() / g_msToUs - curTime;
+            handler_->SendEvent(SEND_TOUCH_EVENT_MSG, parameters, timeout);
+        }
     }
     injectedEvents_.clear();
 }
@@ -214,7 +215,7 @@ void TouchEventInjector::CancelGesture()
     MMI::PointerEvent::PointerItem pointer = {};
     pointer.SetPointerId(1);
     int64_t time = getSystemTime();
-    pointer.SetDownTime(time * MS_TO_US);
+    pointer.SetDownTime(time * g_msToUs);
     pointer.SetPointerId(1);
     if (GetNext() != nullptr && isGestureUnderway_) {
         event = obtainTouchEvent(MMI::PointerEvent::POINTER_ACTION_CANCEL, pointer, time);
@@ -251,7 +252,7 @@ std::shared_ptr<MMI::PointerEvent> TouchEventInjector::obtainTouchEvent(int acti
     std::shared_ptr<MMI::PointerEvent> pointerEvent = MMI::PointerEvent::Create();
     pointerEvent->SetPointerId(point.GetPointerId());
     pointerEvent->SetPointerAction(action);
-    pointerEvent->SetActionTime(actionTime * MS_TO_US);
+    pointerEvent->SetActionTime(actionTime * g_msToUs);
     pointerEvent->SetActionStartTime(point.GetDownTime());
     pointerEvent->AddPointerItem(point);
     pointerEvent->SetSourceType(MMI::PointerEvent::SOURCE_TYPE_TOUCHSCREEN);
@@ -263,7 +264,7 @@ int64_t TouchEventInjector::getSystemTime()
     HILOG_INFO("TouchEventInjector::getSystemTime: start");
     struct timespec times = {0, 0};
     clock_gettime(CLOCK_MONOTONIC, &times);
-    int64_t millisecond = (int64_t)(times.tv_sec * value_1000 + times.tv_nsec / value_1000000);
+    int64_t millisecond = (int64_t)(times.tv_sec * g_value_1000 + times.tv_nsec / g_value_1000000);
 
     return millisecond;
 }
diff --git a/services/aams/src/accessibility_touch_guider.cpp b/services/aams/src/accessibility_touch_guider.cpp
index f0bac248..64a25ca4 100644
--- a/services/aams/src/accessibility_touch_guider.cpp
+++ b/services/aams/src/accessibility_touch_guider.cpp
@@ -276,7 +276,7 @@ bool TouchGuider::TouchGuideListener::OnStarted()
     server_.CancelPostEventIfNeed(SEND_HOVER_EXIT_MSG);
     server_.PostGestureRecognizeExit();
     server_.SendAccessibilityEventToAA(EventType::TYPE_TOUCH_GUIDE_GESTURE_BEGIN);
-    return false;
+    return true;
 }
 
 bool TouchGuider::TouchGuideListener::OnCompleted(GestureType gestureId)
@@ -590,7 +590,7 @@ void TouchGuider::HandleDraggingStateInnerMove(MMI::PointerEvent &event)
     if (pointCount == POINTER_COUNT_1) {
         HILOG_INFO("Only two pointers can be received in the dragging state");
     } else if (pointCount == POINTER_COUNT_2 && IsDragGestureAccept(event)) {
-        /* get densityPixels from WMS */
+        // get densityPixels from WMS
         AccessibilityDisplayManager &displayMgr = AccessibilityDisplayManager::GetInstance();
         auto display = displayMgr.GetDefaultDisplay();
         float densityPixels = display->GetVirtualPixelRatio();
@@ -629,7 +629,7 @@ float TouchGuider::GetAngleCos(float offsetX, float offsetY, bool isGetX)
 
     float ret = isGetX ? offsetX : offsetY;
     double duration = hypot(offsetX, offsetY);
-    if (duration == 0) {
+    if ((int)duration == 0) {
         return ret;
     }
     ret = ret / duration;
@@ -733,9 +733,9 @@ void TouchGuider::ClearReceivedEventRecorder()
 {
     HILOG_DEBUG();
 
-    memset_s(receivedRecorder_.pointerDownX, sizeof(receivedRecorder_.pointerDownX),
+    (void)memset_s(receivedRecorder_.pointerDownX, sizeof(receivedRecorder_.pointerDownX),
              0, sizeof(receivedRecorder_.pointerDownX));
-    memset_s(receivedRecorder_.pointerDownY, sizeof(receivedRecorder_.pointerDownY),
+    (void)memset_s(receivedRecorder_.pointerDownY, sizeof(receivedRecorder_.pointerDownY),
              0, sizeof(receivedRecorder_.pointerDownY));
     receivedRecorder_.lastEvent = nullptr;
 }
diff --git a/services/aams/src/accessibility_window_manager.cpp b/services/aams/src/accessibility_window_manager.cpp
index b3906400..d48e0e4d 100644
--- a/services/aams/src/accessibility_window_manager.cpp
+++ b/services/aams/src/accessibility_window_manager.cpp
@@ -28,11 +28,11 @@ void AccessibilityWindowListener::OnWindowUpdate(const sptr<Rosen::Accessibility
     auto& winMgr = AccessibilityWindowInfoManager::GetInstance();
     switch (type) {
         case Rosen::WindowUpdateType::WINDOW_UPDATE_ADDED: {
-            auto a11yWindowInfo = winMgr.CreateAccessibilityWindowInfo(*windowInfo);
-            winMgr.a11yWindows_.emplace(windowInfo->currentWindowInfo_->wid_, a11yWindowInfo);
-            AccessibilityEventInfo evtInf(windowInfo->currentWindowInfo_->wid_, WINDOW_UPDATE_ADDED);
-            aams->SendEvent(evtInf, aams->GetCurrentAccountId());
-            if (a11yWindowInfo.IsFocused()) {
+            auto a11yWindowInfoAdded = winMgr.CreateAccessibilityWindowInfo(*windowInfo);
+            winMgr.a11yWindows_.emplace(windowInfo->currentWindowInfo_->wid_, a11yWindowInfoAdded);
+            AccessibilityEventInfo evtInfAdded(windowInfo->currentWindowInfo_->wid_, WINDOW_UPDATE_ADDED);
+            aams->SendEvent(evtInfAdded, aams->GetCurrentAccountId());
+            if (a11yWindowInfoAdded.IsFocused()) {
                 winMgr.SetActiveWindow(windowInfo->currentWindowInfo_->wid_);
             }
             break;
@@ -51,30 +51,30 @@ void AccessibilityWindowListener::OnWindowUpdate(const sptr<Rosen::Accessibility
                 winMgr.SetInputFocusedWindow(INVALID_WINDOW_ID);
             }
             winMgr.a11yWindows_.erase(windowInfo->currentWindowInfo_->wid_);
-            AccessibilityEventInfo evtInf(windowInfo->currentWindowInfo_->wid_, WINDOW_UPDATE_REMOVED);
-            aams->SendEvent(evtInf, aams->GetCurrentAccountId());
+            AccessibilityEventInfo evtInfRemoved(windowInfo->currentWindowInfo_->wid_, WINDOW_UPDATE_REMOVED);
+            aams->SendEvent(evtInfRemoved, aams->GetCurrentAccountId());
             break;
         }
         case Rosen::WindowUpdateType::WINDOW_UPDATE_BOUNDS: {
-            AccessibilityEventInfo evtInf(windowInfo->currentWindowInfo_->wid_, WINDOW_UPDATE_BOUNDS);
-            aams->SendEvent(evtInf, aams->GetCurrentAccountId());
+            AccessibilityEventInfo evtInfBounds(windowInfo->currentWindowInfo_->wid_, WINDOW_UPDATE_BOUNDS);
+            aams->SendEvent(evtInfBounds, aams->GetCurrentAccountId());
             break;
         }
         case Rosen::WindowUpdateType::WINDOW_UPDATE_ACTIVE:
             if (!winMgr.a11yWindows_.count(windowInfo->currentWindowInfo_->wid_)) {
-                auto a11yWindowInfo = winMgr.CreateAccessibilityWindowInfo(*windowInfo);
-                winMgr.a11yWindows_.emplace(windowInfo->currentWindowInfo_->wid_, a11yWindowInfo);
+                auto a11yWindowInfoActive = winMgr.CreateAccessibilityWindowInfo(*windowInfo);
+                winMgr.a11yWindows_.emplace(windowInfo->currentWindowInfo_->wid_, a11yWindowInfoActive);
             }
             winMgr.SetActiveWindow(windowInfo->currentWindowInfo_->wid_);
             break;
         case Rosen::WindowUpdateType::WINDOW_UPDATE_FOCUSED: {
             if (!winMgr.a11yWindows_.count(windowInfo->currentWindowInfo_->wid_)) {
-                auto a11yWindowInfo = winMgr.CreateAccessibilityWindowInfo(*windowInfo);
-                winMgr.a11yWindows_.emplace(windowInfo->currentWindowInfo_->wid_, a11yWindowInfo);
+                auto a11yWindowInfoFocused = winMgr.CreateAccessibilityWindowInfo(*windowInfo);
+                winMgr.a11yWindows_.emplace(windowInfo->currentWindowInfo_->wid_, a11yWindowInfoFocused);
             }
             winMgr.SetActiveWindow(windowInfo->currentWindowInfo_->wid_);
-            AccessibilityEventInfo evtInf(windowInfo->currentWindowInfo_->wid_, WINDOW_UPDATE_FOCUSED);
-            aams->SendEvent(evtInf, aams->GetCurrentAccountId());
+            AccessibilityEventInfo evtInfFocused(windowInfo->currentWindowInfo_->wid_, WINDOW_UPDATE_FOCUSED);
+            aams->SendEvent(evtInfFocused, aams->GetCurrentAccountId());
             break;
         }
         default:
@@ -208,7 +208,7 @@ void AccessibilityWindowInfoManager::SetAccessibilityFocusedWindow(int windowId)
     }
 
     if (!a11yWindows_.count(windowId)) {
-        HILOG_WARN("Window id is not found");
+        HILOG_ERROR("Window id is not found");
         return;
     }
 
diff --git a/services/aams/src/accessible_ability_connection.cpp b/services/aams/src/accessible_ability_connection.cpp
index 6e7b7bdb..eb1e1258 100644
--- a/services/aams/src/accessible_ability_connection.cpp
+++ b/services/aams/src/accessible_ability_connection.cpp
@@ -62,7 +62,7 @@ bool AccessibleAbilityChannelStubImpl::SearchElementInfoByAccessibilityId(const
         return false;
     }
     connection->GetProxy()->SearchElementInfoByAccessibilityId(elementId, requestId, callback, mode);
-    HILOG_ERROR("AccessibleAbilityChannelStubImpl::SearchElementInfoByAccessibilityId successfully");
+    HILOG_DEBUG("AccessibleAbilityChannelStubImpl::SearchElementInfoByAccessibilityId successfully");
     return true;
 }
 
@@ -84,6 +84,10 @@ bool AccessibleAbilityChannelStubImpl::SearchElementInfosByText(const int access
         HILOG_ERROR("AccessibleAbilityChannelStubImpl::SearchElementInfosByText failed: no capability");
         return false;
     }
+    if (!connection->GetProxy()) {
+        HILOG_ERROR("get proxy failed");
+        return false;
+    }
     connection->GetProxy()->SearchElementInfosByText(elementId, text, requestId, callback);
     return true;
 }
@@ -106,6 +110,10 @@ bool AccessibleAbilityChannelStubImpl::FindFocusedElementInfo(const int accessib
         HILOG_ERROR("AccessibleAbilityChannelStubImpl::FindFocusedElementInfo failed: no capability");
         return false;
     }
+    if (!connection->GetProxy()) {
+        HILOG_ERROR("get proxy failed");
+        return false;
+    }
     connection->GetProxy()->FindFocusedElementInfo(elementId, focusType, requestId, callback);
     return true;
 }
@@ -303,7 +311,7 @@ void AccessibleAbilityConnection::OnAbilityConnectDone(const AppExecFwk::Element
     elementName_ = element;
 
     if (resultCode != NO_ERROR) {
-        HILOG_DEBUG("Connect failed!");
+        HILOG_ERROR("Connect failed!");
         accountData_->RemoveEnabledAbility(elementName_);
         accountData_->RemoveConnectingA11yAbility(elementName_);
         DelayedSingleton<AccessibleAbilityManagerService>::GetInstance()->UpdateAbilities();
@@ -499,15 +507,10 @@ AAFwk::Want CreateWant(AppExecFwk::ElementName& element)
 void AccessibleAbilityConnection::Disconnect()
 {
     HILOG_DEBUG("start");
-    // temp deal:
-#if 1
     if (AAFwk::AbilityManagerClient::GetInstance()->DisconnectAbility(this) != ERR_OK) {
         HILOG_ERROR("Disconnect failed!");
         return;
     }
-#else
-    OnAbilityDisconnectDone(elementName_, 0);
-#endif
 }
 
 void AccessibleAbilityConnection::Connect(const AppExecFwk::ElementName &element)
diff --git a/services/aams/src/accessible_ability_manager_service.cpp b/services/aams/src/accessible_ability_manager_service.cpp
index 271083b0..110e2d31 100644
--- a/services/aams/src/accessible_ability_manager_service.cpp
+++ b/services/aams/src/accessible_ability_manager_service.cpp
@@ -200,11 +200,18 @@ uint32_t AccessibleAbilityManagerService::RegisterCaptionPropertyCallback(
         }
     }
 
+    if (!callback) {
+        HILOG_ERROR("callback is null");
+        return 0;
+    }
+    if (!callback->AsObject()) {
+        HILOG_ERROR("object is null");
+        return 0;
+    }
     callback->AsObject()->AddDeathRecipient(captionPropertyCallbackDeathRecipient_);
     accountData->AddCaptionPropertyCallback(callback);
-    printf("accountData  AddCaptionPropertyCallback %d\n", accountData->GetCaptionPropertyCallbacks().size());
-    HILOG_INFO("AccessibleAbilityManagerService::RegisterCaptionPropertyCallback successfully");
-
+    HILOG_DEBUG("the size of caption property callbacks is %{public}d",
+        accountData->GetCaptionPropertyCallbacks().size());
     return NO_ERROR;
 }
 
@@ -230,6 +237,14 @@ uint32_t AccessibleAbilityManagerService::RegisterStateCallback(
         }
     }
 
+    if (!callback) {
+        HILOG_ERROR("callback is null");
+        return 0;
+    }
+    if (!callback->AsObject()) {
+        HILOG_ERROR("object is null");
+        return 0;
+    }
     callback->AsObject()->AddDeathRecipient(stateCallbackDeathRecipient_);
     accountData->AddStateCallback(callback);
     HILOG_INFO("AccessibleAbilityManagerService::RegisterStateCallback successfully");
@@ -449,14 +464,18 @@ void AccessibleAbilityManagerService::ClearFocus(int windowId)
 {
     HILOG_DEBUG("start");
     sptr<AccessibilityWindowConnection> connection = GetAccessibilityWindowConnection(windowId);
-    connection->GetProxy()->ClearFocus();
+    if (connection && connection->GetProxy()) {
+        connection->GetProxy()->ClearFocus();
+    }
 }
 
 void AccessibleAbilityManagerService::OutsideTouch(int windowId)
 {
     HILOG_DEBUG("start");
     sptr<AccessibilityWindowConnection> connection = GetAccessibilityWindowConnection(windowId);
-    connection->GetProxy()->OutsideTouch();
+    if (connection && connection->GetProxy()) {
+        connection->GetProxy()->OutsideTouch();
+    }
 }
 
 void AccessibleAbilityManagerService::OnChanging(bool selfChange, Uri& uri)
@@ -569,6 +588,10 @@ void AccessibleAbilityManagerService::PackageRemoved(std::string& bundleName)
     for (auto& connectedAbility : connectedAbilities) {
         std::size_t firstPos = connectedAbility.first.find_first_of('/') + 1;
         std::size_t endPos = connectedAbility.first.find_last_of('/');
+        if (endPos <= firstPos) {
+            HILOG_ERROR("it's a wrong ability and the uri is %{public}s", connectedAbility.first.c_str());
+            continue;
+        }
         std::string connectedBundleName = connectedAbility.first.substr(firstPos, endPos - firstPos);
         if (connectedBundleName == bundleName) {
             HILOG_DEBUG("Remove connected ability and it's bundle name is %{public}s", connectedBundleName.c_str());
@@ -734,10 +757,9 @@ void AccessibleAbilityManagerService::UpdateAbilities()
             if (!connection) {
                 connection = new(std::nothrow) AccessibleAbilityConnection(accountData,
                     connectCounter_++, installAbility);
-                if (!connection) {
-                    HILOG_ERROR("connection is null");
+                if (connection) {
+                    connection->Connect(element);
                 }
-                connection->Connect(element);
             }
         } else {
             HILOG_DEBUG("not in enabledAbilites list .");
@@ -804,15 +826,12 @@ void AccessibleAbilityManagerService::UpdateInputFilter()
     }
     HILOG_DEBUG("InputInterceptor flag is %{public}d", flag);
 
-    if (flag) {
-        inputInterceptor_ = AccessibilityInputInterceptor::GetInstance();
-        inputInterceptor_->SetAvailableFunctions(flag);
-    } else if (inputInterceptor_ != nullptr) {
-        HILOG_DEBUG("Has InputInterceptor before.");
-        inputInterceptor_->SetAvailableFunctions(0);
-    } else {
-        HILOG_DEBUG("InputInterceptor is null.");
+    inputInterceptor_ = AccessibilityInputInterceptor::GetInstance();
+    if (!inputInterceptor_) {
+        HILOG_ERROR("inputInterceptor_ is null.");
+        return;
     }
+    inputInterceptor_->SetAvailableFunctions(flag);
 }
 
 void AccessibleAbilityManagerService::UpdateMagnification()
@@ -828,12 +847,12 @@ void AccessibleAbilityManagerService::UpdateMagnification()
     std::vector<sptr<Rosen::Display>> displays = AccessibilityDisplayManager::GetInstance().GetDisplays();
 
     if (accountData->GetScreenMagnificationFlag()) {
-        for (sptr<Rosen::Display> display : displays) {
-            AccessibilityZoomProxy::GetInstance().Register(display->GetId());
+        for (sptr<Rosen::Display> displayReg : displays) {
+            AccessibilityZoomProxy::GetInstance().Register(displayReg->GetId());
         }
     } else {
-        for (sptr<Rosen::Display> display : displays) {
-            AccessibilityZoomProxy::GetInstance().Unregister(display->GetId());
+        for (sptr<Rosen::Display> displayUnreg : displays) {
+            AccessibilityZoomProxy::GetInstance().Unregister(displayUnreg->GetId());
         }
     }
 }
diff --git a/services/aams/src/accessible_ability_manager_service_event_handler.cpp b/services/aams/src/accessible_ability_manager_service_event_handler.cpp
index a152aabf..c58f84bf 100644
--- a/services/aams/src/accessible_ability_manager_service_event_handler.cpp
+++ b/services/aams/src/accessible_ability_manager_service_event_handler.cpp
@@ -29,6 +29,10 @@ AAMSEventHandler::~AAMSEventHandler()
 
 void AAMSEventHandler::ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event)
 {
+    if (!event) {
+        HILOG_ERROR("event is null");
+        return;
+    }
     HILOG_DEBUG("the eventId is %{public}d", event->GetInnerEventId());
 }
 } // namespace Accessibility
diff --git a/services/aams/test/mock/accessible_ability_manager_service_mock.cpp b/services/aams/test/mock/accessible_ability_manager_service_mock.cpp
index eaf175fd..96879a9f 100755
--- a/services/aams/test/mock/accessible_ability_manager_service_mock.cpp
+++ b/services/aams/test/mock/accessible_ability_manager_service_mock.cpp
@@ -339,15 +339,12 @@ void AccessibleAbilityManagerService::UpdateInputFilter()
     }
     HILOG_DEBUG("InputFilter flag is %{public}d", flag);
 
-    if (flag) {
-        inputInterceptor_ = AccessibilityInputInterceptor::GetInstance();
-        inputInterceptor_->SetAvailableFunctions(flag);
-    } else if (inputInterceptor_ != nullptr) {
-        HILOG_DEBUG("Has InputInterceptor before.");
-        inputInterceptor_->SetAvailableFunctions(0);
-    } else {
-        HILOG_DEBUG("InputInterceptor is null.");
+    inputInterceptor_ = AccessibilityInputInterceptor::GetInstance();
+    if (!inputInterceptor_) {
+        HILOG_ERROR("inputInterceptor_ is null.");
+        return;
     }
+    inputInterceptor_->SetAvailableFunctions(flag);
 }
 
 void AccessibleAbilityManagerService::UpdateMagnification()
@@ -363,12 +360,12 @@ void AccessibleAbilityManagerService::UpdateMagnification()
     std::vector<sptr<Rosen::Display>> displays = AccessibilityDisplayManager::GetInstance().GetDisplays();
 
     if (accountData->GetScreenMagnificationFlag()) {
-        for (sptr<Rosen::Display> display : displays) {
-            AccessibilityZoomProxy::GetInstance().Register(display->GetId());
+        for (sptr<Rosen::Display> displayReg : displays) {
+            AccessibilityZoomProxy::GetInstance().Register(displayReg->GetId());
         }
     } else {
-        for (sptr<Rosen::Display> display : displays) {
-            AccessibilityZoomProxy::GetInstance().Unregister(display->GetId());
+        for (sptr<Rosen::Display> displayUnreg : displays) {
+            AccessibilityZoomProxy::GetInstance().Unregister(displayUnreg->GetId());
         }
     }
 }
diff --git a/services/test/mock/accessible_ability_manager_service_mock.cpp b/services/test/mock/accessible_ability_manager_service_mock.cpp
index da0261ca..2bd24d3f 100644
--- a/services/test/mock/accessible_ability_manager_service_mock.cpp
+++ b/services/test/mock/accessible_ability_manager_service_mock.cpp
@@ -320,15 +320,12 @@ void AccessibleAbilityManagerService::UpdateInputFilter()
     }
     HILOG_DEBUG("InputFilter flag is %{public}d", flag);
 
-    if (flag) {
-        inputInterceptor_ = AccessibilityInputInterceptor::GetInstance();
-        inputInterceptor_->SetAvailableFunctions(flag);
-    } else if (inputInterceptor_ != nullptr) {
-        HILOG_DEBUG("Has InputInterceptor before.");
-        inputInterceptor_->SetAvailableFunctions(0);
-    } else {
-        HILOG_DEBUG("InputInterceptor is null.");
+    inputInterceptor_ = AccessibilityInputInterceptor::GetInstance();
+    if (!inputInterceptor_) {
+        HILOG_ERROR("inputInterceptor_ is null.");
+        return;
     }
+    inputInterceptor_->SetAvailableFunctions(flag);
 }
 
 void AccessibleAbilityManagerService::UpdateMagnification()
@@ -344,12 +341,12 @@ void AccessibleAbilityManagerService::UpdateMagnification()
     std::vector<sptr<Rosen::Display>> displays = AccessibilityDisplayManager::GetInstance().GetDisplays();
 
     if (accountData->GetScreenMagnificationFlag()) {
-        for (sptr<Rosen::Display> display : displays) {
-            AccessibilityZoomProxy::GetInstance().Register(display->GetId());
+        for (sptr<Rosen::Display> displayReg : displays) {
+            AccessibilityZoomProxy::GetInstance().Register(displayReg->GetId());
         }
     } else {
-        for (sptr<Rosen::Display> display : displays) {
-            AccessibilityZoomProxy::GetInstance().Unregister(display->GetId());
+        for (sptr<Rosen::Display> displayUnreg : displays) {
+            AccessibilityZoomProxy::GetInstance().Unregister(displayUnreg->GetId());
         }
     }
 }
diff --git a/services/test/mock/common_event_support_mock.cpp b/services/test/mock/common_event_support_mock.cpp
index a2fe9a2c..cfbff111 100644
--- a/services/test/mock/common_event_support_mock.cpp
+++ b/services/test/mock/common_event_support_mock.cpp
@@ -299,7 +299,7 @@ const std::string CommonEventSupport::COMMON_EVENT_HWID_LOGOUT = "common.event.H
 const std::string CommonEventSupport::COMMON_EVENT_HWID_TOKEN_INVALID = "common.event.HWID_TOKEN_INVALID";
 
 /**
- * Indicate the action of a common event about a logoff of a account ID.
+ * Indicate the action of a common event about a logoff of an account ID.
  * This is a protected common event, which can be sent only by the system.
  */
 const std::string CommonEventSupport::COMMON_EVENT_HWID_LOGOFF = "common.event.HWID_LOGOFF";
diff --git a/test/resource/native_application/aamsSystemTestB/src/amsstabilityb1.cpp b/test/resource/native_application/aamsSystemTestB/src/amsstabilityb1.cpp
index dd564fb0..a9dee420 100644
--- a/test/resource/native_application/aamsSystemTestB/src/amsstabilityb1.cpp
+++ b/test/resource/native_application/aamsSystemTestB/src/amsstabilityb1.cpp
@@ -39,7 +39,7 @@ void AccessibleAbilityListenerTest::OnAbilityConnected()
 
 void AccessibleAbilityListenerTest::OnAccessibilityEvent(const AccessibilityEventInfo& eventInfo)
 {
-    HILOG_INFO("##############AamsStAbilityB1: An Accessibility event is received and eventType is %{public}d",
+    HILOG_INFO("##############AamsStAbilityB1: An Accessibility event is received and eventType is %{public}u",
         eventInfo.GetEventType());
     std::optional<AccessibilityElementInfo> elementInfo;
     Accessibility::AccessibleAbility::GetInstance().GetRootElementInfo(elementInfo);