diff --git a/mycobot_communication/launch/communication_service.launch b/mycobot_communication/launch/communication_service.launch
index 0117bd7..c420c4b 100644
--- a/mycobot_communication/launch/communication_service.launch
+++ b/mycobot_communication/launch/communication_service.launch
@@ -1,7 +1,7 @@
 <launch>
 	<!-- Select connecting device and serial port ，选择连接设备及串口-->
-	<arg name="port" default="/dev/ttyUSB0" />
-	<arg name="baud" default="115200" />
+	<arg name="port" default="/dev/ttyAMA0" />
+	<arg name="baud" default="1000000" />
 
 	<!-- Open communication service ，开启通讯服务-->
 	<node name="mycobot_services" pkg="mycobot_communication" type="mycobot_services.py" output="screen">