diff --git a/src/Rtsp/Rtsp.h b/src/Rtsp/Rtsp.h
index 605dfe4e..d9ba975d 100644
--- a/src/Rtsp/Rtsp.h
+++ b/src/Rtsp/Rtsp.h
@@ -166,32 +166,22 @@ public:
     uint32_t sample_rate;
 };
 
-Buffer::Ptr makeRtpOverTcpPrefix(uint16_t size, uint8_t interleaved);
-
-class RtpPayload{
+class RtpPayload {
 public:
     static int getClockRate(int pt);
     static TrackType getTrackType(int pt);
     static int getAudioChannel(int pt);
     static const char *getName(int pt);
     static CodecId getCodecId(int pt);
+
 private:
     RtpPayload() = delete;
     ~RtpPayload() = delete;
 };
 
-class RtcpCounter {
-public:
-    uint32_t pktCnt = 0;
-    uint32_t octCount = 0;
-    //网络字节序
-    uint32_t timeStamp = 0;
-    uint32_t lastTimeStamp = 0;
-};
-
 class SdpTrack {
 public:
-    typedef std::shared_ptr<SdpTrack> Ptr;
+    using Ptr = std::shared_ptr<SdpTrack>;
 
     string _m;
     string _o;
@@ -211,36 +201,40 @@ public:
 
     string toString() const;
     string getName() const;
+
 public:
     int _pt;
-    string _codec;
-    int _samplerate;
     int _channel;
+    int _samplerate;
+    TrackType _type;
+    string _codec;
     string _fmtp;
     string _control;
     string _control_surffix;
-    TrackType _type;
+
 public:
-    uint8_t _interleaved = 0;
     bool _inited = false;
-    uint32_t _ssrc = 0;
+    uint8_t _interleaved = 0;
     uint16_t _seq = 0;
+    uint32_t _ssrc = 0;
     //时间戳，单位毫秒
     uint32_t _time_stamp = 0;
 };
 
 class SdpParser {
 public:
-    typedef std::shared_ptr<SdpParser> Ptr;
+    using Ptr = std::shared_ptr<SdpParser>;
 
     SdpParser() {}
     SdpParser(const string &sdp) { load(sdp); }
     ~SdpParser() {}
+
     void load(const string &sdp);
     bool available() const;
     SdpTrack::Ptr getTrack(TrackType type) const;
     vector<SdpTrack::Ptr> getAvailableTrack() const;
-    string toString() const ;
+    string toString() const;
+
 private:
     vector<SdpTrack::Ptr> _track_vec;
 };
@@ -250,16 +244,18 @@ private:
  */
 class RtspUrl{
 public:
+    bool _is_ssl;
+    uint16_t _port;
     string _url;
     string _user;
     string _passwd;
     string _host;
-    uint16_t _port;
-    bool _is_ssl;
+
 public:
     RtspUrl() = default;
     ~RtspUrl() = default;
     bool parse(const string &url);
+
 private:
     bool setup(bool,const string &, const string &, const string &);
 };
@@ -269,7 +265,7 @@ private:
 */
 class Sdp : public CodecInfo{
 public:
-    typedef std::shared_ptr<Sdp> Ptr;
+    using Ptr = std::shared_ptr<Sdp>;
 
     /**
      * 构造sdp
@@ -304,6 +300,7 @@ public:
     uint32_t getSampleRate() const{
         return _sample_rate;
     }
+
 private:
     uint8_t _payload_type;
     uint32_t _sample_rate;
@@ -357,7 +354,11 @@ private:
     _StrPrinter _printer;
 };
 
+//创建rtp over tcp4个字节的头
+Buffer::Ptr makeRtpOverTcpPrefix(uint16_t size, uint8_t interleaved);
+//创建rtp-rtcp端口对
 void makeSockPair(std::pair<Socket::Ptr, Socket::Ptr> &pair, const string &local_ip);
+//十六进制方式打印ssrc
 string printSSRC(uint32_t ui32Ssrc);
 
 } //namespace mediakit