diff --git a/README.md b/README.md
index a2ea20f8c..32d0c2681 100644
--- a/README.md
+++ b/README.md
@@ -558,6 +558,8 @@ Uses **WebSocket** long connection — no public IP required.
       "verificationToken": "",
       "allowFrom": ["ou_YOUR_OPEN_ID"],
       "groupPolicy": "mention",
+      "reactEmoji": "OnIt",
+      "doneEmoji": "DONE",
       "streaming": true
     }
   }
@@ -568,6 +570,8 @@ Uses **WebSocket** long connection — no public IP required.
 > `encryptKey` and `verificationToken` are optional for Long Connection mode.
 > `allowFrom`: Add your open_id (find it in nanobot logs when you message the bot). Use `["*"]` to allow all users.
 > `groupPolicy`: `"mention"` (default — respond only when @mentioned), `"open"` (respond to all group messages). Private chats always respond.
+> `reactEmoji`: Emoji for "processing" status (default: `OnIt`). See [available emojis](https://open.larkoffice.com/document/server-docs/im-v1/message-reaction/emojis-introduce).
+> `doneEmoji`: Optional emoji for "completed" status (e.g., `DONE`, `OK`, `HEART`). When set, bot adds this reaction after removing `reactEmoji`.
 
 **3. Run**
 
diff --git a/nanobot/channels/feishu.py b/nanobot/channels/feishu.py
index bac14cb84..e18ed8b01 100644
--- a/nanobot/channels/feishu.py
+++ b/nanobot/channels/feishu.py
@@ -250,6 +250,7 @@ class FeishuConfig(Base):
     verification_token: str = ""
     allow_from: list[str] = Field(default_factory=list)
     react_emoji: str = "THUMBSUP"
+    done_emoji: str | None = None  # Emoji to show when task is completed (e.g., "DONE", "OK")
     group_policy: Literal["open", "mention"] = "mention"
     reply_to_message: bool = False  # If True, bot replies quote the user's original message
     streaming: bool = True
@@ -1274,6 +1275,9 @@ class FeishuChannel(BaseChannel):
         if meta.get("_stream_end"):
             if (message_id := meta.get("message_id")) and (reaction_id := meta.get("reaction_id")):
                 await self._remove_reaction(message_id, reaction_id)
+                # Add completion emoji if configured
+                if self.config.done_emoji and message_id:
+                    await self._add_reaction(message_id, self.config.done_emoji)
 
             buf = self._stream_bufs.pop(chat_id, None)
             if not buf or not buf.text: