diff --git a/README.MD b/README.MD
index 20cea8be..3bd1fb3a 100644
--- a/README.MD
+++ b/README.MD
@@ -353,6 +353,7 @@ The following are the launch parameters available:
     # Unbinned Dense Default
     # Unbinned Sparse Default
     # Binned Sparse Default
+    # Obstacle Avoidance
     DeclareLaunchArgument('depth_work_mode', default_value='')
 ```
 
diff --git a/README_CN.MD b/README_CN.MD
index 1da881f6..1454e889 100644
--- a/README_CN.MD
+++ b/README_CN.MD
@@ -340,6 +340,7 @@ ros2 launch orbbec_camera multi_camera.launch.py
     # Unbinned Dense Default
     # Unbinned Sparse Default
     # Binned Sparse Default
+    # Obstacle Avoidance
     DeclareLaunchArgument('depth_work_mode', default_value='')
 ```
 
diff --git a/orbbec_camera/launch/gemini2.launch.py b/orbbec_camera/launch/gemini2.launch.py
index 1157804e..9d06b8c8 100644
--- a/orbbec_camera/launch/gemini2.launch.py
+++ b/orbbec_camera/launch/gemini2.launch.py
@@ -72,6 +72,7 @@ def generate_launch_description():
         # Unbinned Dense Default
         # Unbinned Sparse Default
         # Binned Sparse Default
+        # Obstacle Avoidance
         DeclareLaunchArgument('depth_work_mode', default_value=''),
         DeclareLaunchArgument('sync_mode', default_value='free_run'),
         DeclareLaunchArgument('depth_delay_us', default_value='0'),