diff --git a/cpp/protoutils.cc b/cpp/protoutils.cc
index e3b50e6..aae2087 100644
--- a/cpp/protoutils.cc
+++ b/cpp/protoutils.cc
@@ -65,7 +65,8 @@ namespace f8
         msg.SerializeToArray(buff + sizeof(PackHead), packlen);
     }
 
-    int Net_SendMsg(a8::TcpClient* tcp_client, unsigned seqid, unsigned short msgid, ::google::protobuf::Message& msg)
+    int Net_SendMsg(a8::TcpClient* tcp_client, unsigned seqid, unsigned short msgid,
+                    ::google::protobuf::Message& msg)
     {
         int packlen = msg.ByteSize();
         assert(packlen < 1024 * 60);
@@ -83,6 +84,25 @@ namespace f8
         return sizeof(PackHead) + packlen;
     }
 
+    int Net_SendBigMsg(a8::TcpClient* tcp_client, unsigned seqid, unsigned short msgid,
+                    ::google::protobuf::Message& msg)
+    {
+        int packlen = msg.ByteSize();
+        assert(packlen < 1024 * 60);
+
+        char* buff = (char*)malloc(sizeof(f8::BigPackHead) + packlen);
+        f8::BigPackHead* head = (f8::BigPackHead*)buff;
+        head->packlen = packlen;
+        head->msgid = msgid;
+        head->seqid = seqid;
+        head->magic_code = MAGIC_CODE;
+        head->rpc_error_code = 0;
+        msg.SerializeToArray(buff + sizeof(f8::BigPackHead), packlen);
+        tcp_client->SendBuff(buff, sizeof(f8::BigPackHead) + packlen);
+        free(buff);
+        return sizeof(f8::BigPackHead) + packlen;
+    }
+
     int Net_SendMsg(a8::TcpListener* tcp_listener, unsigned short socket_handle, unsigned int seqid,
                     unsigned short msgid, ::google::protobuf::Message& msg)
     {
@@ -102,6 +122,25 @@ namespace f8
         return sizeof(PackHead) + packlen;
     }
 
+    int Net_SendBigMsg(a8::TcpListener* tcp_listener, unsigned short socket_handle, unsigned int seqid,
+                       unsigned short msgid, ::google::protobuf::Message& msg)
+    {
+        int packlen = msg.ByteSize();
+        assert(packlen < 1024 * 60);
+
+        char* buff = (char*)malloc(sizeof(f8::BigPackHead) + packlen);
+        f8::BigPackHead* head = (f8::BigPackHead*)buff;
+        head->packlen = packlen;
+        head->msgid = msgid;
+        head->seqid = seqid;
+        head->magic_code = MAGIC_CODE;
+        head->rpc_error_code = 0;
+        msg.SerializeToArray(buff + sizeof(f8::BigPackHead), packlen);
+        tcp_listener->SendClientMsg(socket_handle, buff, sizeof(f8::BigPackHead) + packlen);
+        free(buff);
+        return sizeof(f8::BigPackHead) + packlen;
+    }
+
     int Net_BroadcastMsg(a8::TcpListener* tcp_listener, unsigned int seqid,
                          unsigned short msgid, ::google::protobuf::Message& msg)
     {
@@ -121,6 +160,25 @@ namespace f8
         return sizeof(PackHead) + packlen;
     }
 
+    int Net_BroadcastBigMsg(a8::TcpListener* tcp_listener, unsigned int seqid,
+                            unsigned short msgid, ::google::protobuf::Message& msg)
+    {
+        int packlen = msg.ByteSize();
+        assert(packlen < 1024 * 60);
+
+        char* buff = (char*)malloc(sizeof(f8::BigPackHead) + packlen);
+        f8::BigPackHead* head = (f8::BigPackHead*)buff;
+        head->packlen = packlen;
+        head->msgid = msgid;
+        head->seqid = seqid;
+        head->magic_code = MAGIC_CODE;
+        head->rpc_error_code = 0;
+        msg.SerializeToArray(buff + sizeof(f8::BigPackHead), packlen);
+        tcp_listener->BroadcastMsg(buff, sizeof(f8::BigPackHead) + packlen);
+        free(buff);
+        return sizeof(f8::BigPackHead) + packlen;
+    }
+
     int Net_SendProxyCMsg(a8::TcpClient* tcp_client, unsigned short msgid, ::google::protobuf::Message& msg)
     {
         int packlen = msg.ByteSize();
diff --git a/cpp/protoutils.h b/cpp/protoutils.h
index 3781bdc..191a6d3 100644
--- a/cpp/protoutils.h
+++ b/cpp/protoutils.h
@@ -27,6 +27,16 @@ namespace f8
         unsigned short rpc_error_code;
     };
 
+    //大包消息头部
+    struct BigPackHead
+    {
+        int packlen;
+        unsigned short msgid;
+        unsigned int seqid;
+        unsigned short magic_code;
+        unsigned short rpc_error_code;
+    };
+
     //转发类消息头部
     struct ForwardPackHead
     {
@@ -82,12 +92,18 @@ namespace f8
     void Net_PackMsg(unsigned short msgid, ::google::protobuf::Message& msg, std::string& out);
     int Net_SendMsg(a8::TcpClient* tcp_client, unsigned int seqid,
                     unsigned short msgid, ::google::protobuf::Message& msg);
+    int Net_SendBigMsg(a8::TcpClient* tcp_client, unsigned int seqid,
+                       unsigned short msgid, ::google::protobuf::Message& msg);
     int Net_SendMsg(a8::TcpClient* tcp_client, unsigned int seqid, unsigned short msgid,
                     const char* msgbody, int msgbody_len);
     int Net_SendMsg(a8::TcpListener* tcp_tlistener, unsigned short socket_handle, unsigned int seqid,
                     unsigned short msgid, ::google::protobuf::Message& msg);
+    int Net_SendBigMsg(a8::TcpListener* tcp_tlistener, unsigned short socket_handle, unsigned int seqid,
+                       unsigned short msgid, ::google::protobuf::Message& msg);
     int Net_BroadcastMsg(a8::TcpListener* tcp_tlistener, unsigned int seqid,
                          unsigned short msgid, ::google::protobuf::Message& msg);
+    int Net_BroadcastBigMsg(a8::TcpListener* tcp_tlistener, unsigned int seqid,
+                            unsigned short msgid, ::google::protobuf::Message& msg);
 
     int Net_SendProxyCMsg(a8::TcpClient* tcp_client, unsigned short msgid, ::google::protobuf::Message& msg);