diff --git a/webrtc/RtpExt.cpp b/webrtc/RtpExt.cpp
index 8189b9e9..a0f47bf1 100644
--- a/webrtc/RtpExt.cpp
+++ b/webrtc/RtpExt.cpp
@@ -525,6 +525,17 @@ void RtpExt::setExtId(uint8_t ext_id) {
     }
 }
 
+void RtpExt::clearExt(){
+    assert(_ptr);
+    if (_one_byte_ext) {
+        auto ptr = reinterpret_cast<RtpExtOneByte *>(_ptr);
+        memset(ptr, (int) RtpExtType::padding, RtpExtOneByte::kMinSize + ptr->getSize());
+    } else {
+        auto ptr = reinterpret_cast<RtpExtTwoByte *>(_ptr);
+        memset(ptr, (int) RtpExtType::padding, RtpExtTwoByte::kMinSize + ptr->getSize());
+    }
+}
+
 void RtpExt::setType(RtpExtType type) {
     _type = type;
 }
diff --git a/webrtc/RtpExt.h b/webrtc/RtpExt.h
index d3975410..3d916def 100644
--- a/webrtc/RtpExt.h
+++ b/webrtc/RtpExt.h
@@ -90,6 +90,7 @@ public:
 
     //危险函数，必须保证关联的RtpHeader对象有效
     void setExtId(uint8_t ext_id);
+    void clearExt();
 
 private:
     RtpExt(void *ptr, bool one_byte_ext, const char *str, size_t size);
diff --git a/webrtc/WebRtcTransport.cpp b/webrtc/WebRtcTransport.cpp
index 74f544dd..325debf4 100644
--- a/webrtc/WebRtcTransport.cpp
+++ b/webrtc/WebRtcTransport.cpp
@@ -663,6 +663,7 @@ static void changeRtpExtId(const RtpPacket::Ptr &rtp, const Type &map) {
         auto it = map.find((Type::key_type) pr.first);
         if (it == map.end()) {
             WarnL << "未处理的rtp ext, 类型不识别:" << (int) pr.first;
+            pr.second.clearExt();
             continue;
         }
         setExtType(pr.second, it->first);