diff --git a/src/rtk/src/rtk_node.cpp b/src/rtk/src/rtk_node.cpp
index 1410f8d..8fcfe06 100644
--- a/src/rtk/src/rtk_node.cpp
+++ b/src/rtk/src/rtk_node.cpp
@@ -21,7 +21,7 @@ public:
 
         // 初始化串口读取
         boost_serial = new Boost_serial();
-        boost_serial->init("/dev/ttyTHS0");
+        boost_serial->init("/dev/ttyTHS1");
 
         // 创建发布者
         command_publisher_ = this->create_publisher<sweeper_interfaces::msg::Rtk>("rtk_message", 10);