diff --git a/backend/app/services/lingxi_ws_handler.py b/backend/app/services/lingxi_ws_handler.py
index aa286cd..53a3d88 100644
--- a/backend/app/services/lingxi_ws_handler.py
+++ b/backend/app/services/lingxi_ws_handler.py
@@ -161,7 +161,7 @@ async def _handle_message_async(data):
             _reply_to_feishu(open_id, "灵犀 Agent 已不存在，请联系管理员。")
             return
 
-        _reply_to_feishu(open_id, "正在思考，请稍候...")
+        _reply_to_feishu(open_id, "🤔 正在思考，请稍候...")
 
         from app.agent_runtime import AgentRuntime, AgentConfig, AgentLLMConfig, AgentToolConfig, AgentMemoryConfig
 
diff --git a/backend/app/services/renshenguo2_ws_handler.py b/backend/app/services/renshenguo2_ws_handler.py
index 17cd97c..b26d105 100644
--- a/backend/app/services/renshenguo2_ws_handler.py
+++ b/backend/app/services/renshenguo2_ws_handler.py
@@ -184,7 +184,7 @@ async def _handle_message_async(data):
             _reply_to_feishu(open_id, "人参果1号 Agent 已不存在，请联系管理员。")
             return
 
-        _reply_to_feishu(open_id, "正在思考，请稍候...")
+        _reply_to_feishu(open_id, "🤔 正在思考，请稍候...")
 
         # ─── 图片消息：下载飞书图片到工作区 ───────────────────
         image_attachment_path = None
diff --git a/backend/app/services/renshenguo_ws_handler.py b/backend/app/services/renshenguo_ws_handler.py
index 48dc4d3..37ae67d 100644
--- a/backend/app/services/renshenguo_ws_handler.py
+++ b/backend/app/services/renshenguo_ws_handler.py
@@ -193,7 +193,7 @@ async def _handle_message_async(data):
             _reply_to_feishu(open_id, "人参果 Agent 已不存在，请联系管理员。")
             return
 
-        _reply_to_feishu(open_id, "正在思考，请稍候...")
+        _reply_to_feishu(open_id, "🤔 正在思考，请稍候...")
 
         # ─── 图片消息：下载飞书图片到工作区 ───────────────────
         image_attachment_path: Optional[str] = None
diff --git a/backend/app/services/tiantian_ws_handler.py b/backend/app/services/tiantian_ws_handler.py
index e3211db..e562bd1 100644
--- a/backend/app/services/tiantian_ws_handler.py
+++ b/backend/app/services/tiantian_ws_handler.py
@@ -161,7 +161,7 @@ async def _handle_message_async(data):
             _reply_to_feishu(open_id, "甜甜 Agent 已不存在，请联系管理员。")
             return
 
-        _reply_to_feishu(open_id, "正在思考，请稍候...")
+        _reply_to_feishu(open_id, "🤔 正在思考，请稍候...")
 
         from app.agent_runtime import AgentRuntime, AgentConfig, AgentLLMConfig, AgentToolConfig, AgentMemoryConfig