diff --git a/README.md b/README.md
index 6ae2ae1..3a90967 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@
 在工作目录下(src上一层)
 记得source(可能需要)
 1.  source ./devel/setup.bash
-2.  roslaunch point_visual laser.launch
+2.  rosrun point_visual myviz
 3.  xxxx
 
 #### 参与贡献