diff --git a/conf/config.ini b/conf/config.ini
index cc141882..abff3892 100644
--- a/conf/config.ini
+++ b/conf/config.ini
@@ -201,7 +201,7 @@ sslport=19350
 audioMtuSize=600
 #视频mtu大小，该参数限制rtp最大字节数，推荐不要超过1400
 videoMtuSize=1400
-#rtp包最大长度限制，可以降低内存分配，单位k
+#rtp包最大长度限制，单位KB,主要用于识别TCP上下文破坏时，获取到错误的rtp
 rtpMaxSize=10
 
 [rtp_proxy]
diff --git a/src/Common/config.cpp b/src/Common/config.cpp
index 72760a8b..42626291 100644
--- a/src/Common/config.cpp
+++ b/src/Common/config.cpp
@@ -192,7 +192,7 @@ namespace Rtp {
 //RTP打包最大MTU,公网情况下更小
 const string kVideoMtuSize = RTP_FIELD"videoMtuSize";
 const string kAudioMtuSize = RTP_FIELD"audioMtuSize";
-//rtp包最大长度限制，单位是k
+//rtp包最大长度限制，单位是KB
 const string kRtpMaxSize = RTP_FIELD"rtpMaxSize";
 
 onceToken token([](){
diff --git a/src/Common/config.h b/src/Common/config.h
index f3bf2d18..fe2f6605 100644
--- a/src/Common/config.h
+++ b/src/Common/config.h
@@ -228,7 +228,7 @@ namespace Rtp {
 extern const string kVideoMtuSize;
 //RTP打包最大MTU,公网情况下更小
 extern const string kAudioMtuSize;
-//rtp包最大长度限制, 单位k
+//rtp包最大长度限制, 单位KB
 extern const string kRtpMaxSize;
 } //namespace Rtsp
 
diff --git a/tests/test_rtp.cpp b/tests/test_rtp.cpp
index c14dabf0..0b17ed3f 100644
--- a/tests/test_rtp.cpp
+++ b/tests/test_rtp.cpp
@@ -36,7 +36,7 @@ static bool loadFile(const char *path){
 
     uint32_t timeStamp_last = 0;
     uint16_t len;
-    char rtp[50 * 1024];
+    char rtp[0xFFFF];
     struct sockaddr addr = {0};
     auto sock = Socket::createSocket();
     size_t total_size = 0;