diff --git a/ext/mini/services/devicemanagerservice/src/ability/lite/dm_ability_manager.cpp b/ext/mini/services/devicemanagerservice/src/ability/lite/dm_ability_manager.cpp
index 3b588515..b6f9025e 100644
--- a/ext/mini/services/devicemanagerservice/src/ability/lite/dm_ability_manager.cpp
+++ b/ext/mini/services/devicemanagerservice/src/ability/lite/dm_ability_manager.cpp
@@ -39,9 +39,9 @@ AbilityStatus DmAbilityManager::StartAbility(AbilityRole role)
 
 void DmAbilityManager::waitForTimeout(uint32_t timeout_s)
 {
-    struct  timespec ts;
+    struct timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
-    ts.tv_sec += timeout_s;
+    ts.tv_sec += (int32_t)timeout_s;
     sem_timedwait(&mSem_, &ts);
 }
 
diff --git a/ext/mini/services/devicemanagerservice/src/ability/standard/dm_ability_manager.cpp b/ext/mini/services/devicemanagerservice/src/ability/standard/dm_ability_manager.cpp
index 8cf00ecc..47283189 100644
--- a/ext/mini/services/devicemanagerservice/src/ability/standard/dm_ability_manager.cpp
+++ b/ext/mini/services/devicemanagerservice/src/ability/standard/dm_ability_manager.cpp
@@ -84,7 +84,7 @@ void DmAbilityManager::waitForTimeout(uint32_t timeout_s)
 {
     struct timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
-    ts.tv_sec += timeout_s;
+    ts.tv_sec += (int32_t)timeout_s;
     sem_timedwait(&mSem_, &ts);
 }
 
diff --git a/ext/pin_auth/src/ability/lite/dm_ability_manager.cpp b/ext/pin_auth/src/ability/lite/dm_ability_manager.cpp
index 45112330..d58403ae 100644
--- a/ext/pin_auth/src/ability/lite/dm_ability_manager.cpp
+++ b/ext/pin_auth/src/ability/lite/dm_ability_manager.cpp
@@ -34,7 +34,7 @@ void DmAbilityManager::waitForTimeout(uint32_t timeout_s)
 {
     struct timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
-    ts.tv_sec += timeout_s;
+    ts.tv_sec += (int32_t)timeout_s;
     sem_timedwait(&mSem_, &ts);
 }
 
diff --git a/ext/pin_auth/src/ability/standard/dm_ability_manager.cpp b/ext/pin_auth/src/ability/standard/dm_ability_manager.cpp
index b1ea6b99..09d72031 100644
--- a/ext/pin_auth/src/ability/standard/dm_ability_manager.cpp
+++ b/ext/pin_auth/src/ability/standard/dm_ability_manager.cpp
@@ -49,7 +49,7 @@ AbilityStatus DmAbilityManager::StartAbility(AbilityRole role)
     AAFwk::AbilityManagerClient::GetInstance()->Connect();
     ErrCode result = AAFwk::AbilityManagerClient::GetInstance()->StartAbility(want);
     if (result != OHOS::ERR_OK) {
-        LOGE("Start Ability faild");
+        LOGE("Start Ability failed");
         mStatus_ = ABILITY_STATUS_FAILED;
         return mStatus_;
     }
diff --git a/interfaces/kits/js/src/native_devicemanager_js.cpp b/interfaces/kits/js/src/native_devicemanager_js.cpp
index 172e641b..c1bf2b6e 100644
--- a/interfaces/kits/js/src/native_devicemanager_js.cpp
+++ b/interfaces/kits/js/src/native_devicemanager_js.cpp
@@ -91,11 +91,15 @@ void DmNapiInitCallback::OnRemoteDied()
             return;
         }
         deviceManagerNapi->OnEvent("serviceDie", 0, nullptr);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnRemoteDied work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -123,11 +127,15 @@ void DmNapiDeviceStateCallback::OnDeviceOnline(const DmDeviceInfo &deviceInfo)
             return;
         }
         deviceManagerNapi->OnDeviceStateChange(DmNapiDevStateChangeAction::ONLINE, callback->deviceInfo_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnDeviceOnline work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -155,11 +163,15 @@ void DmNapiDeviceStateCallback::OnDeviceReady(const DmDeviceInfo &deviceInfo)
             return;
         }
         deviceManagerNapi->OnDeviceStateChange(DmNapiDevStateChangeAction::READY, callback->deviceInfo_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnDeviceReady work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -187,11 +199,15 @@ void DmNapiDeviceStateCallback::OnDeviceOffline(const DmDeviceInfo &deviceInfo)
             return;
         }
         deviceManagerNapi->OnDeviceStateChange(DmNapiDevStateChangeAction::OFFLINE, callback->deviceInfo_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnDeviceOffline work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -219,11 +235,15 @@ void DmNapiDeviceStateCallback::OnDeviceChanged(const DmDeviceInfo &deviceInfo)
             return;
         }
         deviceManagerNapi->OnDeviceStateChange(DmNapiDevStateChangeAction::CHANGE, callback->deviceInfo_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnDeviceChanged work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -253,11 +273,15 @@ void DmNapiDiscoveryCallback::OnDeviceFound(uint16_t subscribeId, const DmDevice
             return;
         }
         deviceManagerNapi->OnDeviceFound(callback->subscribeId_, callback->deviceInfo_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnDeviceFound work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -288,11 +312,15 @@ void DmNapiDiscoveryCallback::OnDiscoveryFailed(uint16_t subscribeId, int32_t fa
             return;
         }
         deviceManagerNapi->OnDiscoveryFailed(callback->subscribeId_, callback->reason_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnDiscoveryFailed work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -346,11 +374,15 @@ void DmNapiAuthenticateCallback::OnAuthResult(const std::string &deviceId, const
             return;
         }
         deviceManagerNapi->OnAuthResult(callback->deviceId_, callback->token_, callback->status_, callback->reason_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnAuthResult work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -378,11 +410,15 @@ void DmNapiVerifyAuthCallback::OnVerifyAuthResult(const std::string &deviceId, i
             return;
         }
         deviceManagerNapi->OnVerifyResult(callback->deviceId_, callback->resultCode_, callback->flag_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnVerifyAuthResult work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
@@ -1047,11 +1083,15 @@ void DmNapiDeviceManagerFaCallback::OnCall(const std::string &paramJson)
             return;
         }
         deviceManagerNapi->OnDmfaCall(callback->token_);
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     });
     if (ret != 0) {
         LOGE("Failed to execute OnCall work queue");
-        delete work;
+        if (work != nullptr) {
+            delete work;
+        }
     }
 }
 
diff --git a/services/devicemanagerservice/src/ability/lite/dm_ability_manager.cpp b/services/devicemanagerservice/src/ability/lite/dm_ability_manager.cpp
index 6d87d130..fed65776 100644
--- a/services/devicemanagerservice/src/ability/lite/dm_ability_manager.cpp
+++ b/services/devicemanagerservice/src/ability/lite/dm_ability_manager.cpp
@@ -36,7 +36,7 @@ void DmAbilityManager::waitForTimeout(uint32_t timeout_s)
 {
     struct timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
-    ts.tv_sec += timeout_s;
+    ts.tv_sec += (int32_t)timeout_s;
     sem_timedwait(&mSem_, &ts);
 }
 
diff --git a/services/devicemanagerservice/src/ability/standard/dm_ability_manager.cpp b/services/devicemanagerservice/src/ability/standard/dm_ability_manager.cpp
index ce077df9..a4916043 100644
--- a/services/devicemanagerservice/src/ability/standard/dm_ability_manager.cpp
+++ b/services/devicemanagerservice/src/ability/standard/dm_ability_manager.cpp
@@ -62,7 +62,7 @@ void DmAbilityManager::waitForTimeout(uint32_t timeout_s)
 {
     struct timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
-    ts.tv_sec += timeout_s;
+    ts.tv_sec += (int32_t)timeout_s;
     sem_timedwait(&mSem_, &ts);
 }
 
diff --git a/services/devicemanagerservice/src/dependency/timer/dm_timer.cpp b/services/devicemanagerservice/src/dependency/timer/dm_timer.cpp
index 9ef388b1..c4f95b94 100644
--- a/services/devicemanagerservice/src/dependency/timer/dm_timer.cpp
+++ b/services/devicemanagerservice/src/dependency/timer/dm_timer.cpp
@@ -82,7 +82,6 @@ void DmTimer::Stop(int32_t code)
         LOGI("DmTimer is not init");
         return;
     }
-    LOGI("DmTimer %s Stop code (%d)", mTimerName_.c_str(), code);
     if (mTimeFd_[1]) {
         char event = 'S';
         if (write(mTimeFd_[1], &event, 1) < 0) {
diff --git a/utils/src/dm_anonymous.cpp b/utils/src/dm_anonymous.cpp
index 8fbe5b58..29920522 100644
--- a/utils/src/dm_anonymous.cpp
+++ b/utils/src/dm_anonymous.cpp
@@ -51,8 +51,7 @@ std::string GetAnonyInt32(const int32_t value)
         tempString[0] = '*';
         return tempString;
     }
-
-    for (int32_t i = 1; i < length - 1; i++) {
+    for (size_t i = 1; i < length - 1; i++) {
         tempString[i] = '*';
     }
     return tempString;