diff --git a/main/xiaozhi-server/core/handle/sendAudioHandle.py b/main/xiaozhi-server/core/handle/sendAudioHandle.py
index 63a2411c..20850ac2 100644
--- a/main/xiaozhi-server/core/handle/sendAudioHandle.py
+++ b/main/xiaozhi-server/core/handle/sendAudioHandle.py
@@ -316,3 +316,13 @@ async def send_stt_message(conn: "ConnectionHandler", text):
     await send_tts_message(conn, "start")
     # 发送start消息后客户端状态会处于说话中状态，同步服务端状态
     conn.client_is_speaking = True
+
+
+async def send_display_message(conn: "ConnectionHandler", text):
+    """发送纯显示消息"""
+    message = {
+        "type": "stt",
+        "text": text,
+        "session_id": conn.session_id
+    }
+    await conn.websocket.send(json.dumps(message))
diff --git a/main/xiaozhi-server/core/providers/tools/unified_tool_handler.py b/main/xiaozhi-server/core/providers/tools/unified_tool_handler.py
index 6f289632..a5d4c3d8 100644
--- a/main/xiaozhi-server/core/providers/tools/unified_tool_handler.py
+++ b/main/xiaozhi-server/core/providers/tools/unified_tool_handler.py
@@ -13,6 +13,7 @@ from .server_mcp import ServerMCPExecutor
 from .device_iot import DeviceIoTExecutor
 from .device_mcp import DeviceMCPExecutor
 from .mcp_endpoint import MCPEndpointExecutor
+from core.handle.sendAudioHandle import send_display_message
 
 
 class UnifiedToolHandler:
@@ -167,6 +168,12 @@ class UnifiedToolHandler:
 
             self.logger.debug(f"调用函数: {function_name}, 参数: {arguments}")
 
+            # 发送工具调用显示消息到设备
+            try:
+                await send_display_message(self.conn, f"% {function_name}")
+            except Exception as e:
+                self.logger.warning(f"发送工具调用显示消息失败: {e}")
+
             # 执行工具调用
             result = await self.tool_manager.execute_tool(function_name, arguments)
             return result