diff --git a/interfaces/native/include/sensor_agent_type.h b/interfaces/native/include/sensor_agent_type.h
index 85531a585d586719192e43621f5fc0bf4775ef02..78479e4ed9b30879d7be9ad09b16d55c54f5c61d 100644
--- a/interfaces/native/include/sensor_agent_type.h
+++ b/interfaces/native/include/sensor_agent_type.h
@@ -126,7 +126,7 @@ typedef struct SensorEvent {
     int64_t timestamp;     /**< Time when sensor data was reported */
     uint32_t option;       /**< Sensor data options, including the measurement range and accuracy */
     int32_t mode;          /**< Sensor data reporting mode (described in {@link SensorMode}) */
-    uint8_t *data;         /**< Sensor data */
+    uint8_t *data = nullptr;         /**< Sensor data */
     uint32_t dataLen;      /**< Sensor data length */
 } SensorEvent;
 
@@ -154,7 +154,7 @@ typedef struct UserData {
 typedef struct SensorUser {
     char name[NAME_MAX_LEN];  /**< Name of the sensor data subscriber */
     RecordSensorCallback callback;   /**< Callback for reporting sensor data */
-    UserData *userData;              /**< Reserved field for the sensor data subscriber */
+    UserData *userData = nullptr;              /**< Reserved field for the sensor data subscriber */
 } SensorUser;
 
 /**
diff --git a/interfaces/plugin/include/async_callback_info.h b/interfaces/plugin/include/async_callback_info.h
index 2d515f213513d9b470ce0ae31ae4a4c4ab3d56db..94b3512b98c28057bd03ecfb6ac32c717d5c5430 100644
--- a/interfaces/plugin/include/async_callback_info.h
+++ b/interfaces/plugin/include/async_callback_info.h
@@ -121,10 +121,6 @@ public:
                 napi_delete_reference(env, callback[i]);
             }
         }
-        if (work != nullptr) {
-            delete work;
-            work = nullptr;
-        }
     }
 
 private:
diff --git a/interfaces/plugin/src/sensor_napi_utils.cpp b/interfaces/plugin/src/sensor_napi_utils.cpp
index 4cfecb6827b2522fc6282b6e9610e95323881325..4ee5a4b4ff068f6ba302e37211268e213201df33 100644
--- a/interfaces/plugin/src/sensor_napi_utils.cpp
+++ b/interfaces/plugin/src/sensor_napi_utils.cpp
@@ -471,7 +471,7 @@ void EmitAsyncCallbackWork(sptr<AsyncCallbackInfo> asyncCallbackInfo)
     }
 }
 
-void freeWork(uv_work_t *work)
+void DeleteWork(uv_work_t *work)
 {
     CHKPV(work);
     delete work;
@@ -486,12 +486,12 @@ void EmitUvEventLoop(sptr<AsyncCallbackInfo> asyncCallbackInfo)
     CHKPV(loop);
     uv_work_t *work = new(std::nothrow) uv_work_t;
     CHKPV(work);
-    asyncCallbackInfo->work = work;
     asyncCallbackInfo->IncStrongRef(nullptr);
     work->data = asyncCallbackInfo.GetRefPtr();
     int32_t ret = uv_queue_work(loop, work, [] (uv_work_t *work) { }, [] (uv_work_t *work, int status) {
         CHKPV(work);
         sptr<AsyncCallbackInfo> asyncCallbackInfo(static_cast<AsyncCallbackInfo *>(work->data));
+        DeleteWork(work);
         /**
          * After the asynchronous task is created, the asyncCallbackInfo reference count is reduced
          * to 0 destructions, so you need to add 1 to the asyncCallbackInfo reference count when the
@@ -530,14 +530,11 @@ void EmitUvEventLoop(sptr<AsyncCallbackInfo> asyncCallbackInfo)
             return;
         }
         napi_close_handle_scope(asyncCallbackInfo->env, scope);
-        asyncCallbackInfo->work = nullptr;
-        freeWork(work);
     });
     if (ret != 0) {
         SEN_HILOGE("uv_queue_work fail");
         asyncCallbackInfo->DecStrongRef(nullptr);
-        asyncCallbackInfo->work = nullptr;
-        freeWork(work);
+        DeleteWork(work);
     }
 }
 
diff --git a/services/sensor/include/sensor_service.h b/services/sensor/include/sensor_service.h
index a436cf89adc7c5377f994b9f4f67c6af91248997..62137d5bd8fc4c2314852c2fc6e6151d418c160c 100644
--- a/services/sensor/include/sensor_service.h
+++ b/services/sensor/include/sensor_service.h
@@ -78,11 +78,11 @@ private:
     ClientInfo &clientInfo_ = ClientInfo::GetInstance();
     SensorManager &sensorManager_ = SensorManager::GetInstance();
     FlushInfoRecord &flushInfo_ = FlushInfoRecord::GetInstance();
-    sptr<SensorDataProcesser> sensorDataProcesser_;
-    sptr<ReportDataCallback> reportDataCallback_;
+    sptr<SensorDataProcesser> sensorDataProcesser_ = nullptr;
+    sptr<ReportDataCallback> reportDataCallback_ = nullptr;
     std::mutex uidLock_;
     // death recipient of sensor client
-    sptr<IRemoteObject::DeathRecipient> clientDeathObserver_;
+    sptr<IRemoteObject::DeathRecipient> clientDeathObserver_ = nullptr;
     ErrCode SaveSubscriber(uint32_t sensorId, int64_t samplingPeriodNs, int64_t maxReportDelayNs);
 };
 }  // namespace Sensors
diff --git a/services/sensor/src/sensor_dump.cpp b/services/sensor/src/sensor_dump.cpp
index d1d298b904f82bf1703aa9447056f37af4612768..51553a02e57479bf76fb0e8b53c55c954f587170 100644
--- a/services/sensor/src/sensor_dump.cpp
+++ b/services/sensor/src/sensor_dump.cpp
@@ -173,7 +173,9 @@ void SensorDump::ParseCommand(int32_t fd, const std::vector<std::string> &args,
     }
     RELEASE_RES:
     for (size_t i = 0; i < args.size(); ++i) {
-        delete[] argv[i];
+        if (argv[i] != nullptr) {
+            delete[] argv[i];
+        }
     }
     delete[] argv;
 }