diff --git a/util/RTCContext.cpp b/util/RTCContext.cpp
index d5d0a73..91e0e52 100644
--- a/util/RTCContext.cpp
+++ b/util/RTCContext.cpp
@@ -1,5 +1,5 @@
 #include "RTCContext.h"
-//#define GIL
+#define GIL
 
 void RTCContext::onRoom(uint32_t typeId, RTCENGINE_NAMESPACE::MRTCRoomInfo& roomInfo) {
     //std::cout << "RTCContext::onRoom():" << roomInfo.roomId << "," << roomInfo.displayName << "," << roomInfo.userId << "," << roomInfo.message;
@@ -63,6 +63,7 @@ void RTCContext::onAudioProcess(const char* roomId, const char* peerId,
                                 mrtc::MRTCAudioFrame& audioFrame,
                                 mrtc::MRTCAudioSourceType audioSourceType)
 {
+    std::lock_guard<std::mutex> lock(mutex_);
     namespace np = boost::python::numpy;
     namespace py = boost::python;
     Py_Initialize();          // 初始化 Python