diff --git a/frameworks/src/sensor_agent_proxy.c b/frameworks/src/sensor_agent_proxy.c
index 62c347c34adafaf9bbd73a647f370998a23c644d..00f47568e4f0810d2bad10e979c7b57c4670a28e 100644
--- a/frameworks/src/sensor_agent_proxy.c
+++ b/frameworks/src/sensor_agent_proxy.c
@@ -137,7 +137,7 @@ int32_t GetSensorInfos(IOwner owner, IpcIo *reply)
             return SENSOR_ERROR_INVALID_PARAM;
         }
         ReadInt32(reply, &(notify->count));
-        uint32_t len;
+        uint32_t len = 0;
         ReadUint32(reply, &len);
         uint8_t *data = (uint8_t *)ReadBuffer(reply, (size_t)len);
         if ((notify->count <= 0) || (data == NULL)) {
@@ -169,7 +169,7 @@ int32_t GetSensorInfos(IOwner owner, IpcIo *reply)
 int32_t Notify(IOwner owner, int32_t code, IpcIo *reply)
 {
     HILOG_DEBUG(HILOG_MODULE_APP, "%s begin", __func__);
-    int32_t functionId;
+    int32_t functionId = -1;
     ReadInt32(reply, &functionId);
     if (functionId == SENSOR_SERVICE_ID_GetAllSensors) {
         return GetSensorInfos(owner, reply);
@@ -212,10 +212,10 @@ int32_t SensorChannelCallback(uint32_t code, IpcIo *data, IpcIo *reply, MessageO
         HILOG_ERROR(HILOG_MODULE_APP, "%s failed, data is NULL", __func__);
         return SENSOR_ERROR_INVALID_PARAM;
     }
-    uint32_t len1;
+    uint32_t len1 = 0;
     ReadUint32(data, &len1);
     uint8_t *eventData = (uint8_t *)ReadBuffer(data, (size_t)len1);
-    uint32_t len2;
+    uint32_t len2 = 0;
     ReadUint32(data, &len2);
     uint8_t *sensorData = (uint8_t *)ReadBuffer(data, (size_t)len2);
     if ((eventData == NULL) || (sensorData == NULL)) {
diff --git a/services/src/sensor_service.c b/services/src/sensor_service.c
index 1bfd09dfdcf99c3fea321afd7b0bf2852e4ccf26..e04f215fe1c5b38b56fa57cc97658f2b6e69fd38 100644
--- a/services/src/sensor_service.c
+++ b/services/src/sensor_service.c
@@ -49,7 +49,7 @@ int32_t ActivateSensorInvoke(SensorFeatureApi *defaultApi, IpcIo *req, IpcIo *re
 {
     HILOG_DEBUG(HILOG_MODULE_APP, "[SERVICE:%s]: %s begin", SENSOR_SERVICE, __func__);
     WriteInt32(reply, SENSOR_SERVICE_ID_ActivateSensor);
-    int32_t sensorId;
+    int32_t sensorId = -1;
     ReadInt32(req, &sensorId);
     if (defaultApi == NULL) {
         HILOG_ERROR(HILOG_MODULE_APP, "[SERVICE:%s]: %s failed, defaultApi is null", SENSOR_SERVICE, __func__);
@@ -67,7 +67,7 @@ int32_t DeactivateSensorInvoke(SensorFeatureApi *defaultApi, IpcIo *req, IpcIo *
 {
     HILOG_DEBUG(HILOG_MODULE_APP, "[SERVICE:%s]: %s begin", SENSOR_SERVICE, __func__);
     WriteInt32(reply, SENSOR_SERVICE_ID_DeactivateSensor);
-    int32_t sensorId;
+    int32_t sensorId = -1;
     ReadInt32(req, &sensorId);
     if (defaultApi == NULL) {
         HILOG_ERROR(HILOG_MODULE_APP, "[SERVICE:%s]: %s failed, defaultApi is null", SENSOR_SERVICE, __func__);
@@ -85,7 +85,7 @@ int32_t SetBatchInvoke(SensorFeatureApi *defaultApi, IpcIo *req, IpcIo *reply)
 {
     HILOG_DEBUG(HILOG_MODULE_APP, "[SERVICE:%s]: %s begin", SENSOR_SERVICE, __func__);
     WriteInt32(reply, SENSOR_SERVICE_ID_SetBatchs);
-    int32_t sensorId;
+    int32_t sensorId = -1;
     ReadInt32(req, &sensorId);
     int64_t updateInterval;
     ReadInt64(req, &updateInterval);
@@ -107,7 +107,7 @@ int32_t SubscribeSensorInvoke(SensorFeatureApi *defaultApi, IpcIo *req, IpcIo *r
 {
     HILOG_DEBUG(HILOG_MODULE_APP, "[SERVICE:%s]: %s begin", SENSOR_SERVICE, __func__);
     WriteInt32(reply, SENSOR_SERVICE_ID_SubscribeSensor);
-    int32_t sensorId;
+    int32_t sensorId = -1;
     ReadInt32(req, &sensorId);
     if (defaultApi == NULL) {
         HILOG_ERROR(HILOG_MODULE_APP, "[SERVICE:%s]: %s failed, defaultApi is null", SENSOR_SERVICE, __func__);
@@ -126,7 +126,7 @@ int32_t UnsubscribeSensorInvoke(SensorFeatureApi *defaultApi, IpcIo *req, IpcIo
 {
     HILOG_DEBUG(HILOG_MODULE_APP, "[SERVICE:%s]: %s begin", SENSOR_SERVICE, __func__);
     WriteInt32(reply, SENSOR_SERVICE_ID_UnsubscribeSensor);
-    int32_t sensorId;
+    int32_t sensorId = -1;
     ReadInt32(req, &sensorId);
     if (defaultApi == NULL) {
         HILOG_ERROR(HILOG_MODULE_APP, "[SERVICE:%s]: %s failed, defaultApi is null", SENSOR_SERVICE, __func__);
@@ -144,9 +144,9 @@ int32_t SetModeInvoke(SensorFeatureApi *defaultApi, IpcIo *req, IpcIo *reply)
 {
     HILOG_DEBUG(HILOG_MODULE_APP, "[SERVICE:%s]: %s begin", SENSOR_SERVICE, __func__);
     WriteInt32(reply, SENSOR_SERVICE_ID_SetMode);
-    int32_t sensorId;
+    int32_t sensorId = -1;
     ReadInt32(req, &sensorId);
-    int32_t mode;
+    int32_t mode = -1;
     ReadInt32(req, &mode);
     if (defaultApi == NULL) {
         HILOG_ERROR(HILOG_MODULE_APP, "[SERVICE:%s]: %s failed, defaultApi is null", SENSOR_SERVICE, __func__);
@@ -164,9 +164,9 @@ int32_t SetOptionInvoke(SensorFeatureApi *defaultApi, IpcIo *req, IpcIo *reply)
 {
     HILOG_DEBUG(HILOG_MODULE_APP, "[SERVICE:%s]: %s begin", SENSOR_SERVICE, __func__);
     WriteInt32(reply, SENSOR_SERVICE_ID_SetOption);
-    int32_t sensorId;
+    int32_t sensorId = -1;
     ReadInt32(req, &sensorId);
-    int32_t option;
+    int32_t option = -1;
     ReadInt32(req, &option);
     if (defaultApi == NULL) {
         HILOG_ERROR(HILOG_MODULE_APP, "[SERVICE:%s]: %s failed, defaultApi is null", SENSOR_SERVICE, __func__);