diff --git a/src/Rtmp/RtmpMediaSource.h b/src/Rtmp/RtmpMediaSource.h
index 9b8d9df8..05ab882d 100644
--- a/src/Rtmp/RtmpMediaSource.h
+++ b/src/Rtmp/RtmpMediaSource.h
@@ -108,8 +108,8 @@ public:
 	}
 protected:
 	AMFValue _metadata;
-	map<int, RtmpPacket::Ptr> _mapCfgFrame;
-	map<int,uint32_t> _mapStamp;
+    unordered_map<int, RtmpPacket::Ptr> _mapCfgFrame;
+	unordered_map<int,uint32_t> _mapStamp;
 	mutable recursive_mutex _mtxMap;
 	RingBuffer<RtmpPacket::Ptr>::Ptr _pRing; //rtp环形缓冲
 	bool _bRegisted = false;