diff --git a/services/key_enable/utils/include/unlock_event_helper.h b/services/key_enable/utils/include/unlock_event_helper.h
index ddc245c295588cb191422b4e4842c6dd0581f421..99c872ab5b95b3da11812dbd31278856db141b5c 100644
--- a/services/key_enable/utils/include/unlock_event_helper.h
+++ b/services/key_enable/utils/include/unlock_event_helper.h
@@ -57,6 +57,7 @@ private:
     bool hasRegistered_ = false;
     bool hasInited_ = false;
     bool hasUnLocked_ = false;
+    std::atomic<bool> recvEvent_ {false};
     std::mutex unlockMutex_;
     std::condition_variable unlockConVar_;
     std::shared_ptr<UnlockEventSubscriber> unlockEventSubscriber_;
diff --git a/services/key_enable/utils/src/unlock_event_helper.cpp b/services/key_enable/utils/src/unlock_event_helper.cpp
index b57e9864671ed06342b0ec740ca35f183e1ae196..33a5cad5c6655e385bf425bc9ee5ecf4033167be 100644
--- a/services/key_enable/utils/src/unlock_event_helper.cpp
+++ b/services/key_enable/utils/src/unlock_event_helper.cpp
@@ -37,6 +37,10 @@ void UnlockEventHelper::UnlockEventSubscriber::OnReceiveEvent(const EventFwk::Co
     const auto action = want.GetAction();
     if (action == EventFwk::CommonEventSupport::COMMON_EVENT_SCREEN_UNLOCKED) {
         LOG_INFO(LABEL, "receive unlocked event");
+        // exchange return old value
+        if (UnlockEventHelper::GetInstance().recvEvent_.exchange(true)) {
+            return;
+        }
         UnlockEventHelper::GetInstance().FinishWaiting();
         return;
     }
@@ -108,6 +112,7 @@ void UnlockEventHelper::UnregisterEvent()
         return;
     }
     hasRegistered_ = false;
+    LOG_INFO(LABEL, "UnregisterEvent end");
 }
 
 bool UnlockEventHelper::WaitForCommonEventManager()