diff --git a/napi/settings/napi_settings.cpp b/napi/settings/napi_settings.cpp
index 5ef5dcf7..d9d4438c 100644
--- a/napi/settings/napi_settings.cpp
+++ b/napi/settings/napi_settings.cpp
@@ -251,7 +251,10 @@ napi_value napi_get_uri(napi_env env, napi_callback_info info)
         .uri = "",
         .status = false,
     };
-
+    if (asyncCallbackInfo == nullptr) {
+        SETTING_LOG_ERROR("asyncCallbackInfo is null");
+        return wrap_void_to_js(env);
+    }
     std::string keyStr = unwrap_string_from_js(env, args[PARAM0]);
     // get userId string
     std::vector<int> tmpId;
@@ -759,7 +762,10 @@ napi_value napi_get_value(napi_env env, napi_callback_info info)
         .uri = "",
         .status = false,
     };
-
+    if (asyncCallbackInfo == nullptr) {
+        SETTING_LOG_ERROR("asyncCallbackInfo is null");
+        return wrap_void_to_js(env);
+    }
     if (wrapper != nullptr) {
         asyncCallbackInfo->dataAbilityHelper = wrapper->GetDataAbilityHelper();
     }
@@ -915,7 +921,10 @@ napi_value napi_get_value_ext(napi_env env, napi_callback_info info, const bool
         .uri = "",
         .status = false,
     };
-
+    if (asyncCallbackInfo == nullptr) {
+        SETTING_LOG_ERROR("asyncCallbackInfo is null");
+        return wrap_void_to_js(env);
+    }
     asyncCallbackInfo->dataShareHelper = getDataShareHelper(env, args[PARAM0], stageMode);
 
     asyncCallbackInfo->key = unwrap_string_from_js(env, args[PARAM1]);
@@ -1311,7 +1320,10 @@ napi_value napi_set_value(napi_env env, napi_callback_info info)
         .uri = "",
         .status = false,
     };
-
+    if (asyncCallbackInfo == nullptr) {
+        SETTING_LOG_ERROR("asyncCallbackInfo is null");
+        return wrap_void_to_js(env);
+    }
     if (wrapper != nullptr) {
         asyncCallbackInfo->dataAbilityHelper = wrapper->GetDataAbilityHelper();
     }
@@ -1351,7 +1363,10 @@ napi_value napi_set_value_ext(napi_env env, napi_callback_info info, const bool
         .uri = "",
         .status = false,
     };
-
+    if (asyncCallbackInfo == nullptr) {
+        SETTING_LOG_ERROR("asyncCallbackInfo is null");
+        return wrap_void_to_js(env);
+    }
     asyncCallbackInfo->dataShareHelper = getDataShareHelper(env, args[PARAM0], stageMode);
     asyncCallbackInfo->key = unwrap_string_from_js(env, args[PARAM1]);
     asyncCallbackInfo->uri = unwrap_string_from_js(env, args[PARAM2]); //temp
@@ -1492,7 +1507,10 @@ napi_value napi_enable_airplane_mode(napi_env env, napi_callback_info info)
         .uri = "",
         .status = 0,
     };
-
+    if (asyncCallbackInfo == nullptr) {
+        SETTING_LOG_ERROR("asyncCallbackInfo is null");
+        return wrap_void_to_js(env);
+    }
     if (argc == paramOfCallback) {
         SETTING_LOG_INFO("%{public}s, asyncCallback.", __func__);
 
@@ -1622,7 +1640,10 @@ napi_value napi_can_show_floating(napi_env env, napi_callback_info info)
         .uri = "",
         .status = 0,
     };
-
+    if (asyncCallbackInfo == nullptr) {
+        SETTING_LOG_ERROR("asyncCallbackInfo is null");
+        return wrap_void_to_js(env);
+    }
     napi_value resource = nullptr;  
     NAPI_CALL(env, napi_create_string_utf8(env, "enableAirplaneMode", NAPI_AUTO_LENGTH, &resource));
 
@@ -1846,6 +1867,10 @@ napi_value napi_set_value_sync_ext(bool stageMode, size_t argc, napi_env env, na
 {
     SETTING_LOG_INFO("argv[0] is a context, Stage Model: %{public}d", stageMode);
     AsyncCallbackInfo *asyncCallbackInfo = new AsyncCallbackInfo();
+    if (asyncCallbackInfo == nullptr) {
+        SETTING_LOG_ERROR("asyncCallbackInfo is null");
+        return wrap_void_to_js(env);
+    }
     asyncCallbackInfo->key = unwrap_string_from_js(env, args[PARAM1]);
     napi_valuetype valueType;
 
diff --git a/napi/settings/napi_settings_observer.cpp b/napi/settings/napi_settings_observer.cpp
index e8774a4b..f6e5532f 100644
--- a/napi/settings/napi_settings_observer.cpp
+++ b/napi/settings/napi_settings_observer.cpp
@@ -34,9 +34,13 @@ using namespace OHOS::AccountSA;
 namespace OHOS {
 namespace Settings {
     std::map<std::string, sptr<SettingsObserver>> g_observerMap;
+    std::mutex g_observerMapMutex;
 
     SettingsObserver::~SettingsObserver()
     {
+        if (this->cbInfo == nullptr) {
+            return;
+        }
         delete this->cbInfo;
         this->cbInfo = nullptr;
     }
@@ -163,12 +167,17 @@ namespace Settings {
             return wrap_bool_to_js(env, false);
         }
         AsyncCallbackInfo *callbackInfo = new AsyncCallbackInfo();
+        if (callbackInfo == nullptr) {
+            SETTING_LOG_ERROR("%{public}s, failed to get callbackInfo.", __func__);
+            return wrap_bool_to_js(env, false);
+        }
 
         callbackInfo->env = env;
         callbackInfo->key = unwrap_string_from_js(env, args[PARAM1]);
         callbackInfo->tableName = unwrap_string_from_js(env, args[PARAM2]);
         napi_create_reference(env, args[PARAM3], 1, &(callbackInfo->callbackRef));
 
+        std::lock_guard<std::mutex> lockGuard(g_observerMapMutex);
         if (g_observerMap.find(callbackInfo->key) != g_observerMap.end() &&
         g_observerMap[callbackInfo->key] != nullptr) {
             SETTING_LOG_INFO("%{public}s, already registered.", __func__);
@@ -225,6 +234,7 @@ namespace Settings {
         std::string key = unwrap_string_from_js(env, args[PARAM1]);
         std::string tableName = unwrap_string_from_js(env, args[PARAM2]);
         
+        std::lock_guard<std::mutex> lockGuard(g_observerMapMutex);
         if (g_observerMap.find(key) == g_observerMap.end()) {
             SETTING_LOG_ERROR("%{public}s, null.", __func__);
             return wrap_bool_to_js(env, false);
diff --git a/napi/settings/native_module.cpp b/napi/settings/native_module.cpp
index ff665759..8355625a 100644
--- a/napi/settings/native_module.cpp
+++ b/napi/settings/native_module.cpp
@@ -30,7 +30,7 @@ EXTERN_C_START
  */
 static napi_value Init(napi_env env, napi_value exports)
 {
-    SETTING_LOG_INFO("napi_moudule Init start...");
+    SETTING_LOG_INFO("napi_module Init start...");
 
     napi_property_descriptor desc[] = {
         DECLARE_NAPI_FUNCTION("getURI", napi_get_uri),
@@ -49,7 +49,7 @@ static napi_value Init(napi_env env, napi_value exports)
     // init settings class
     NAPI_CALL(env, napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc));
     InitNapiClass(env, exports);
-    SETTING_LOG_INFO("napi_moudule Init end...");
+    SETTING_LOG_INFO("napi_module Init end...");
     return exports;
 }
 EXTERN_C_END