diff --git a/timer_task/include/nativeapi_timer_task.h b/timer_task/include/nativeapi_timer_task.h
index ba598e9e2c82f6bcdaee0636698b51bc2a90d2fb..5fdf9f26aa849da9ebd8151e99c3897ae86fdb61 100755
--- a/timer_task/include/nativeapi_timer_task.h
+++ b/timer_task/include/nativeapi_timer_task.h
@@ -27,8 +27,30 @@ extern "C" {
 typedef void *timerHandle_t;
 
 int InitTimerTask();
+
+/** 创建并启动定时器任务，支持周期执行任务和单次超时任务两种
+ *
+ * @param isPeriodic        指定定时器任务类型是周期执行还是单次超时执行
+ * @param delay             周期执行任务的执行周期或者定时任务的器超时时间，单位ms
+ * @param userCallback      定时器任务回调函数指针，原型满足`void (*)(union sigval)`
+ * @param userContext       定时器任务的上下文指针
+ * @param timerHandle       定时器句柄，创建并启动任务成功，则保存的是定时器句柄
+ *
+ * @return EC_SUCCESS       启动定时任务成功
+ * @return EC_INVALID       参数非法
+ * @return EC_NORESOURCE    定时器创建失败
+ * @return EC_FAILURE       启动定时器失败
+*/
 int StartTimerTask(bool isPeriodic, const unsigned int delay, void* userCallback,
                    void* userContext, timerHandle_t* timerHandle);
+
+/** 停止并删除由StartTimerTask创建的定时器，调用该函数后，定时器句柄失效
+ *
+ * @param timerHandle       定时器句柄
+ *
+ * @return EC_SUCCESS       启动定时任务成功
+ * @return 其他值，表示操作失败
+*/
 int StopTimerTask(const timerHandle_t timerHandle);
 
 #ifdef __cplusplus
diff --git a/timer_task/src/nativeapi_timer_task.c b/timer_task/src/nativeapi_timer_task.c
index 2ac88901e48e62c0ab482cb93891311d1a4921e3..c4ade42e663d788d8c04d427b853e90a4285e9a6 100755
--- a/timer_task/src/nativeapi_timer_task.c
+++ b/timer_task/src/nativeapi_timer_task.c
@@ -27,13 +27,13 @@ int StartTimerTask(bool isPeriodic, const unsigned int delay, void* userCallback
     void* userContext, timerHandle_t* timerHandle)
 {
     if (userCallback == NULL || timerHandle == NULL) {
-        return EC_FAILURE;
+        return EC_INVALID;
     }
 
     KalTimerType timerType = isPeriodic ? KAL_TIMER_PERIODIC : KAL_TIMER_ONCE;
     KalTimerId timerId = KalTimerCreate((KalTimerProc)userCallback, timerType, userContext, delay);
     if (timerId == NULL) {
-        return EC_FAILURE;
+        return EC_NORESOURCE;
     }
 
     if (KalTimerStart(timerId) != KAL_OK) {
@@ -48,7 +48,7 @@ int StartTimerTask(bool isPeriodic, const unsigned int delay, void* userCallback
 int StopTimerTask(const timerHandle_t timerHandle)
 {
     if (timerHandle == NULL) {
-        return EC_FAILURE;
+        return EC_INVALID;
     }
     return KalTimerDelete((KalTimerId)timerHandle);;
 }
\ No newline at end of file