diff --git a/util/RTCContext.cpp b/util/RTCContext.cpp
index cb90eab..9a4c427 100644
--- a/util/RTCContext.cpp
+++ b/util/RTCContext.cpp
@@ -515,6 +515,7 @@ bool RTCContext::initSend(const char* srcRoomId, const char* destRoomId, const i
         sleep(3);
     }
     if (std::string(srcRoomId) != std::string(destRoomId)) {
+        isMultiRoom_ = true;
         std::cout << "join multi room" << std::endl;
         int16_t ret1 = rtcEngine_->joinMultiRoom(destRoomId);
         if (ret1 != 0)
@@ -522,6 +523,8 @@ bool RTCContext::initSend(const char* srcRoomId, const char* destRoomId, const i
             std::cout << "joinMultiRoom fail, ret:" << ret1;
             return false;
         }
+    } else {
+        isMultiRoom_ = false;
     }
 
     mrtc::MRTCAudioOption option;
@@ -554,7 +557,7 @@ int16_t RTCContext::sendAudioData(uint8_t channelIndex, const void* pData, int32
 int16_t RTCContext::sendCustomAudioData(const int16_t channelIndex, void* customData, int32_t sampleRate,
                                         uint64_t channelNum, uint64_t dataLen)
 {
-    while(!isOnRoom_ || !isJoinMultiRoom_) {
+    while(!isOnRoom_ || (isMultiRoom_ && !isJoinMultiRoom_)) {
         std::cout << "wait for room and multi room before send" << std::endl;
         sleep(3);
     }
diff --git a/util/RTCContext.h b/util/RTCContext.h
index 5e1e27d..fc428c0 100644
--- a/util/RTCContext.h
+++ b/util/RTCContext.h
@@ -105,6 +105,7 @@ private:
     bool isOnRoom_ = false;
     bool isOnConsumer_ = false;
     bool isJoinMultiRoom_ = false;
+    bool isMultiRoom_ = false;
     boost::python::object pyCallback_;
     void ** numpyApi_;
     void onRoom(uint32_t typeId, RTCENGINE_NAMESPACE::MRTCRoomInfo& roomInfo);