diff --git a/gateway/platforms/feishu.py b/gateway/platforms/feishu.py
index 3b57db46d3..126a3b7a09 100644
--- a/gateway/platforms/feishu.py
+++ b/gateway/platforms/feishu.py
@@ -1970,8 +1970,8 @@ class FeishuAdapter(BasePlatformAdapter):
         if not message_id or self._is_duplicate(message_id):
             logger.debug("[Feishu] Dropping duplicate/missing message_id: %s", message_id)
             return
-        if getattr(sender, "sender_type", "") == "bot":
-            logger.debug("[Feishu] Dropping bot-originated event: %s", message_id)
+        if self._is_self_sent_bot_message(event):
+            logger.debug("[Feishu] Dropping self-sent bot event: %s", message_id)
             return
 
         chat_type = getattr(message, "chat_type", "p2p")
@@ -3294,6 +3294,23 @@ class FeishuAdapter(BasePlatformAdapter):
             return self._post_mentions_bot(normalized.mentioned_ids)
         return False
 
+    def _is_self_sent_bot_message(self, event: Any) -> bool:
+        """Return True only for Feishu events emitted by this Hermes bot."""
+        sender = getattr(event, "sender", None)
+        sender_type = str(getattr(sender, "sender_type", "") or "").strip().lower()
+        if sender_type not in {"bot", "app"}:
+            return False
+
+        sender_id = getattr(sender, "sender_id", None)
+        sender_open_id = str(getattr(sender_id, "open_id", "") or "").strip()
+        sender_user_id = str(getattr(sender_id, "user_id", "") or "").strip()
+
+        if self._bot_open_id and sender_open_id == self._bot_open_id:
+            return True
+        if self._bot_user_id and sender_user_id == self._bot_user_id:
+            return True
+        return False
+
     def _message_mentions_bot(self, mentions: List[Any]) -> bool:
         """Check whether any mention targets the configured or inferred bot identity."""
         for mention in mentions:
diff --git a/tests/gateway/test_feishu.py b/tests/gateway/test_feishu.py
index 14ed9e1715..cfb5d12fa1 100644
--- a/tests/gateway/test_feishu.py
+++ b/tests/gateway/test_feishu.py
@@ -743,6 +743,57 @@ class TestAdapterBehavior(unittest.TestCase):
 
         self.assertFalse(adapter._should_accept_group_message(SimpleNamespace(mentions=[other_mention]), sender_id, ""))
 
+    @patch.dict(
+        os.environ,
+        {
+            "FEISHU_BOT_OPEN_ID": "ou_hermes",
+            "FEISHU_BOT_USER_ID": "u_hermes",
+        },
+        clear=True,
+    )
+    def test_other_bot_sender_is_not_treated_as_self_sent_message(self):
+        from gateway.config import PlatformConfig
+        from gateway.platforms.feishu import FeishuAdapter
+
+        adapter = FeishuAdapter(PlatformConfig())
+        event = SimpleNamespace(
+            sender=SimpleNamespace(
+                sender_type="bot",
+                sender_id=SimpleNamespace(open_id="ou_other_bot", user_id="u_other_bot"),
+            )
+        )
+
+        self.assertFalse(adapter._is_self_sent_bot_message(event))
+
+    @patch.dict(
+        os.environ,
+        {
+            "FEISHU_BOT_OPEN_ID": "ou_hermes",
+            "FEISHU_BOT_USER_ID": "u_hermes",
+        },
+        clear=True,
+    )
+    def test_self_bot_sender_is_treated_as_self_sent_message(self):
+        from gateway.config import PlatformConfig
+        from gateway.platforms.feishu import FeishuAdapter
+
+        adapter = FeishuAdapter(PlatformConfig())
+        by_open_id = SimpleNamespace(
+            sender=SimpleNamespace(
+                sender_type="bot",
+                sender_id=SimpleNamespace(open_id="ou_hermes", user_id="u_other"),
+            )
+        )
+        by_user_id = SimpleNamespace(
+            sender=SimpleNamespace(
+                sender_type="app",
+                sender_id=SimpleNamespace(open_id="ou_other", user_id="u_hermes"),
+            )
+        )
+
+        self.assertTrue(adapter._is_self_sent_bot_message(by_open_id))
+        self.assertTrue(adapter._is_self_sent_bot_message(by_user_id))
+
     @patch.dict(
         os.environ,
         {