diff --git a/services/sink/sinkmanager/src/distributed_input_sink_manager.cpp b/services/sink/sinkmanager/src/distributed_input_sink_manager.cpp
index 27b157f112bb559b41a36570b8e6f95d7d59ef30..8df911964633b66d844a7623fdee643901effea5 100644
--- a/services/sink/sinkmanager/src/distributed_input_sink_manager.cpp
+++ b/services/sink/sinkmanager/src/distributed_input_sink_manager.cpp
@@ -948,7 +948,6 @@ void DistributedInputSinkManager::CallBackScreenInfoChange()
     }
     nlohmann::json screenMsg(transInfos);
     std::string str = screenMsg.dump();
-    std::lock_guard<std::mutex> lock(mutex_);
     for (const auto &iter : getSinkScreenInfosCallbacks_) {
         iter->OnResult(str);
     }