diff --git a/js_sys_module/timer/sys_timer.cpp b/js_sys_module/timer/sys_timer.cpp
index 802afcb1135e87894affbaa1aede6fad3b801434..364665fc6deff44964cfe852bca9fa3279184047 100755
--- a/js_sys_module/timer/sys_timer.cpp
+++ b/js_sys_module/timer/sys_timer.cpp
@@ -189,7 +189,10 @@ void Timer::TimerCallback(uv_timer_t* handle)
 
     napi_call_function(env, undefinedValue, callback,
                        callbackInfo->argc_, callbackArgv, &callbackResult);
-    Helper::CloseHelp::DeletePointer(callbackArgv, true);
+    {
+        std::lock_guard<std::mutex> lock(timeLock);
+        Helper::CloseHelp::DeletePointer(callbackArgv, true);
+    }
     if (Helper::NapiHelper::IsExceptionPending(env)) {
         HILOG_ERROR("Pending exception in TimerCallback. Triggering HandleUncaughtException");
         reinterpret_cast<NativeEngine*>(env)->HandleUncaughtException();