diff --git a/trunk/src/app/srs_app_rtc_source.cpp b/trunk/src/app/srs_app_rtc_source.cpp
index def745418..9c8f87728 100644
--- a/trunk/src/app/srs_app_rtc_source.cpp
+++ b/trunk/src/app/srs_app_rtc_source.cpp
@@ -1642,6 +1642,11 @@ bool SrsRtcRecvTrack::has_ssrc(uint32_t ssrc)
     return track_desc_->has_ssrc(ssrc);
 }
 
+uint32_t SrsRtcRecvTrack::get_ssrc()
+{
+    return track_desc_->ssrc_;
+}
+
 void SrsRtcRecvTrack::update_rtt(int rtt)
 {
     nack_receiver_->update_rtt(rtt);
diff --git a/trunk/src/app/srs_app_rtc_source.hpp b/trunk/src/app/srs_app_rtc_source.hpp
index 63be91c8a..ddcfa0d40 100644
--- a/trunk/src/app/srs_app_rtc_source.hpp
+++ b/trunk/src/app/srs_app_rtc_source.hpp
@@ -490,6 +490,7 @@ public:
     virtual ~SrsRtcRecvTrack();
 public:
     bool has_ssrc(uint32_t ssrc);
+    uint32_t get_ssrc();
     void update_rtt(int rtt);
     void update_send_report_time(const SrsNtp& ntp);
     srs_error_t send_rtcp_rr();