diff --git a/src/Common/MultiMediaSourceMuxer.cpp b/src/Common/MultiMediaSourceMuxer.cpp
index 5774f45c..f3d44352 100644
--- a/src/Common/MultiMediaSourceMuxer.cpp
+++ b/src/Common/MultiMediaSourceMuxer.cpp
@@ -9,6 +9,7 @@
 */
 
 #include <math.h>
+#include "Common/config.h"
 #include "MultiMediaSourceMuxer.h"
 namespace mediakit {
 
@@ -450,11 +451,21 @@ void MultiMediaSourceMuxer::inputFrame(const Frame::Ptr &frame_in) {
 }
 
 bool MultiMediaSourceMuxer::isEnabled(){
+    GET_CONFIG(uint32_t, stream_none_reader_delay_ms, General::kStreamNoneReaderDelayMS);
+    if (!_is_enable || _last_check.elapsedTime() > stream_none_reader_delay_ms) {
+        //无人观看时，每次检查是否真的无人观看
+        //有人观看时，则延迟一定时间检查一遍是否无人观看了(节省性能)
 #if defined(ENABLE_RTPPROXY)
-    return (_muxer->isEnabled() || _rtp_sender);
+        _is_enable = (_muxer->isEnabled() || _rtp_sender);
 #else
-    return _muxer->isEnabled();
+        _is_enable = _muxer->isEnabled();
 #endif //ENABLE_RTPPROXY
+        if (_is_enable) {
+            //无人观看时，不刷新计时器,因为无人观看时每次都会检查一遍，所以刷新计数器无意义且浪费cpu
+            _last_check.resetTime();
+        }
+    }
+    return _is_enable;
 }
 
 
diff --git a/src/Common/MultiMediaSourceMuxer.h b/src/Common/MultiMediaSourceMuxer.h
index 11ef0e81..36729447 100644
--- a/src/Common/MultiMediaSourceMuxer.h
+++ b/src/Common/MultiMediaSourceMuxer.h
@@ -183,6 +183,8 @@ public:
     void onAllTrackReady() override;
 
 private:
+    bool _is_enable = false;
+    Ticker _last_check;
     Stamp _stamp[2];
     MultiMuxerPrivate::Ptr _muxer;
     std::weak_ptr<MultiMuxerPrivate::Listener> _track_listener;