diff --git a/src/aios/proto/agent_msg.py b/src/aios/proto/agent_msg.py
index cccfa38..b9665c4 100644
--- a/src/aios/proto/agent_msg.py
+++ b/src/aios/proto/agent_msg.py
@@ -136,7 +136,7 @@ class AgentMsg:
         resp_msg.create_time = time.time()
 
         resp_msg.rely_msg_id = self.msg_id
-        resp_msg.target = self.target
+        resp_msg.target = self.sender
         resp_msg.sender = sender_id
         resp_msg.body = resp_body
         resp_msg.topic = self.topic
diff --git a/src/component/discord_tunnel.py b/src/component/discord_tunnel.py
index fb3eee5..1332e58 100644
--- a/src/component/discord_tunnel.py
+++ b/src/component/discord_tunnel.py
@@ -11,7 +11,7 @@ from typing import Optional
 
 from aios import KnowledgeStore, ObjectType
 from aios.frame.tunnel import AgentTunnel
-from aios.proto.agent_msg import AgentMsg
+from aios.proto.agent_msg import AgentMsg, AgentMsgType
 import discord
 
 from aios.storage.storage import AIStorage
@@ -96,10 +96,6 @@ class DiscordTunnel(AgentTunnel):
             if message.author == self.client.user:
                 return
 
-            if len(message.channel.members) > 2:
-                if self.client.user not in message.mentions:
-                    return
-
             content = re.sub("<@.+>", "", message.content).strip()
 
             attach_type = None
@@ -142,6 +138,10 @@ class DiscordTunnel(AgentTunnel):
             agent_msg.sender = message.author.name
             self.ai_bus.register_message_handler(agent_msg.sender, self._process_message)
 
+            if len(message.channel.members) > 2:
+                if self.client.user not in message.mentions:
+                    agent_msg.msg_type = AgentMsgType.TYPE_GROUP_MSG
+
             if attach_type is None:
                 agent_msg.body = content
             elif attach_type == "image":
@@ -163,7 +163,6 @@ class DiscordTunnel(AgentTunnel):
                         return
 
                     if len(resp_msg.body) < 1:
-                        await message.channel.send("")
                         return
 
                     knownledge_object = KnowledgeStore().parse_object_in_message(resp_msg.body)
diff --git a/src/component/slack_tunnel.py b/src/component/slack_tunnel.py
index fb9379d..7deda23 100644
--- a/src/component/slack_tunnel.py
+++ b/src/component/slack_tunnel.py
@@ -14,7 +14,7 @@ from slack_bolt.app.async_app import AsyncApp
 
 from aios import KnowledgeStore, ObjectType
 from aios.frame.tunnel import AgentTunnel
-from aios.proto.agent_msg import AgentMsg
+from aios.proto.agent_msg import AgentMsg, AgentMsgType
 from aios.storage.storage import AIStorage
 
 logger = logging.getLogger(__name__)
@@ -162,7 +162,7 @@ class SlackTunnel(AgentTunnel):
                                         break
 
             if not is_metion:
-                return
+                agent_msg.msg_type = AgentMsgType.TYPE_GROUPMSG
 
             if file_type is None:
                 agent_msg.body = content
@@ -186,7 +186,6 @@ class SlackTunnel(AgentTunnel):
                         return
 
                     if len(resp_msg.body) < 1:
-                        await app.client.chat_postMessage(channel=event["channel"], text=f"")
                         return
 
                     knownledge_object = KnowledgeStore().parse_object_in_message(resp_msg.body)