diff --git a/python/wcferry/client.py b/python/wcferry/client.py
index 230f245..72ce2d6 100644
--- a/python/wcferry/client.py
+++ b/python/wcferry/client.py
@@ -61,11 +61,14 @@ class Wcf():
             self.sender = msg.sender
             self.roomid = msg.roomid
             self.content = msg.content
+            self.extra_data = msg.extra_data
 
         def __str__(self) -> str:
             s = f"{'自己发的:' if self._is_self else ''}"
             s += f"{self.sender}[{self.roomid}]:{self.id}:{self.type}:{self.xml.replace(chr(10), '').replace(chr(9),'')}\n"
             s += self.content
+            s += "\n"
+            s += self.extra_data
             return s
 
         def from_self(self) -> bool:
diff --git a/rpc/pb_types.h b/rpc/pb_types.h
index 679af84..185ac6b 100644
--- a/rpc/pb_types.h
+++ b/rpc/pb_types.h
@@ -43,4 +43,5 @@ typedef struct {
     string sender;
     string roomid;
     string content;
+    string extra_data;
 } WxMsg_t;
diff --git a/rpc/proto/wcf.proto b/rpc/proto/wcf.proto
index 86c5751..7cf877c 100644
--- a/rpc/proto/wcf.proto
+++ b/rpc/proto/wcf.proto
@@ -84,6 +84,7 @@ message WxMsg
     string sender  = 6; // 消息发送者
     string roomid  = 7; // 群 id（如果是群消息的话）
     string content = 8; // 消息内容
+    string extra_data = 9; // 附加内容
 }
 
 message TextMsg
diff --git a/spy/load_calls.cpp b/spy/load_calls.cpp
index 7fb7742..277cb70 100644
--- a/spy/load_calls.cpp
+++ b/spy/load_calls.cpp
@@ -9,8 +9,8 @@ WxCalls_t wxCalls = {
     { 0x236607C, 0x23660F4, 0x2366128 }, // User Info: wxid, nickname, mobile
     0x521D30,                            // Send Message
     /* Receive Message:
-          Hook,   call,   type, self,   id, msgXml, roomId, wxId, content */
-    { 0x550F4C, 0xA96350, 0x38, 0x3C, 0x184, 0x1EC, 0x48, 0x170, 0x70 },
+          Hook,   call,   type, self,   id, msgXml, roomId, wxId, content, extra_data */
+    { 0x550F4C, 0xA96350, 0x38, 0x3C, 0x184, 0x1EC, 0x48, 0x170, 0x70, 0x1AC },
     { 0xBD780, 0x771980, 0x521640 },                      // Send Image Message
     { 0xC3B70, 0x771980, 0x3ED8C0 },                      // Send File Message
     { 0xB8A70, 0x3ED5E0, 0x107F00, 0x3ED7B0, 0x2386FE4 }, // Send xml Message
diff --git a/spy/spy_types.h b/spy/spy_types.h
index 25100ca..c38fcb4 100644
--- a/spy/spy_types.h
+++ b/spy/spy_types.h
@@ -18,6 +18,7 @@ typedef struct RecvMsg {
     DWORD roomId;  // 群聊时，为群ID；私聊时，为微信ID
     DWORD wxId;    // 私聊时，为空；群聊时，为发送者微信ID
     DWORD content; // 消息内容地址
+    DWORD extra_data; // 附加数据
 } RecvMsg_t;
 
 typedef struct Sendfile {