diff --git a/server/tools/protobuild/cs_msgid.proto b/server/tools/protobuild/cs_msgid.proto
index 12f1737c..e8ee3827 100644
--- a/server/tools/protobuild/cs_msgid.proto
+++ b/server/tools/protobuild/cs_msgid.proto
@@ -3,6 +3,7 @@ package cs;
 //消息id定义
 enum CMMessageId_e
 {
+    _CMKcpHandshake = 99;
     _CMPing = 101;
 
     _CMJoin = 103;
@@ -31,6 +32,7 @@ enum CMMessageId_e
 
 enum SMMessageId_e
 {
+    _SMKcpHandshake = 99;
     _SMPing = 101;
     _SMRpcError = 102;
     _SMReconnect = 104;
diff --git a/server/tools/protobuild/cs_proto.proto b/server/tools/protobuild/cs_proto.proto
index 9e3b7965..5a4a151b 100755
--- a/server/tools/protobuild/cs_proto.proto
+++ b/server/tools/protobuild/cs_proto.proto
@@ -62,6 +62,25 @@ message SMPing
     optional int32 param1 = 1;
 }
 
+//kcp握手
+message CMKcpHandshake
+{
+    optional int32 proto_version = 1; //协议版本号Constant_e.ProtoVersion
+    optional string account_id = 2; //账号id
+    optional string session_id = 3; //session id
+    optional string team_uuid = 4; //保留
+}
+
+message SMKcpHandshake
+{
+    optional int32 errcode = 1; //errcode != 0时表示不支持kcp
+    optional string errmsg = 2; //errmsg
+    optional int32 conv = 3; //用来作为客户端的conv
+    optional bytes secret_key = 4; //secret key客户端每次上报的时候加在包头之前
+    optional string remote_host = 5; //host
+    optional int32 remote_port = 6; //port
+}
+
 //rpc调用错误
 message SMRpcError
 {