diff --git a/gsuid_core/bot.py b/gsuid_core/bot.py
index 4136c77..8ef798c 100644
--- a/gsuid_core/bot.py
+++ b/gsuid_core/bot.py
@@ -24,6 +24,7 @@ class _Bot:
         target_type: Literal['group', 'direct', 'channel', 'sub_channel'],
         target_id: Optional[str],
         bot_id: str,
+        bot_self_id: str,
         msg_id: str,
     ):
         if isinstance(message, Message):
@@ -38,6 +39,7 @@ class _Bot:
         send = MessageSend(
             content=message,
             bot_id=bot_id,
+            bot_self_id=bot_self_id,
             target_type=target_type,
             target_id=target_id,
             msg_id=msg_id,
@@ -62,6 +64,7 @@ class Bot:
         self.ev = ev
         self.logger = self.bot.logger
         self.bot_id = ev.bot_id
+        self.bot_self_id = ev.bot_self_id
 
     async def send(self, message: Union[Message, List[Message], str, bytes]):
         return await self.bot.target_send(
@@ -69,6 +72,7 @@ class Bot:
             self.ev.user_type,
             self.ev.group_id if self.ev.group_id else self.ev.user_id,
             self.ev.bot_id,
+            self.bot_self_id,
             self.ev.msg_id,
         )
 
@@ -83,5 +87,6 @@ class Bot:
             target_type,
             target_id,
             self.ev.bot_id,
+            self.ev.bot_self_id,
             self.ev.msg_id,
         )
diff --git a/gsuid_core/handler.py b/gsuid_core/handler.py
index ecf46b4..27a9fbe 100644
--- a/gsuid_core/handler.py
+++ b/gsuid_core/handler.py
@@ -24,6 +24,7 @@ async def get_user_pml(msg: MessageReceive) -> int:
 async def msg_process(msg: MessageReceive) -> Event:
     event = Event(
         msg.bot_id,
+        msg.bot_self_id,
         msg.msg_id,
         msg.user_type,
         msg.group_id,
diff --git a/gsuid_core/models.py b/gsuid_core/models.py
index 1167aa9..1195ba9 100644
--- a/gsuid_core/models.py
+++ b/gsuid_core/models.py
@@ -10,6 +10,7 @@ class Message(Struct):
 
 class MessageReceive(Struct):
     bot_id: str = 'Bot'
+    bot_self_id: str = ''
     msg_id: str = ''
     user_type: Literal['group', 'direct', 'channel', 'sub_channel'] = 'group'
     group_id: Optional[str] = None
@@ -30,6 +31,7 @@ class Event(MessageReceive):
 
 class MessageSend(Struct):
     bot_id: str = 'Bot'
+    bot_self_id: str = ''
     msg_id: str = ''
     target_type: Optional[str] = None
     target_id: Optional[str] = None