diff --git a/src/ldrobot-lidar-ros2/ldlidar_node/launch/ldlidar.launch.py b/src/ldrobot-lidar-ros2/ldlidar_node/launch/ldlidar.launch.py
index 19f927e..4e209b6 100644
--- a/src/ldrobot-lidar-ros2/ldlidar_node/launch/ldlidar.launch.py
+++ b/src/ldrobot-lidar-ros2/ldlidar_node/launch/ldlidar.launch.py
@@ -41,7 +41,6 @@ def generate_launch_description():
     declare_node_name_cmd = DeclareLaunchArgument(
         'node_name',
         default_value='ldlidar_node',
-        namespace='lidar',
         description='Name of the node'
     )
 
@@ -50,7 +49,7 @@ def generate_launch_description():
         package='ldlidar_node',
         executable='ldlidar_node',
         name=node_name,
-        namespace='',
+        namespace='lidar',
         output='screen',
         parameters=[
             # YAML files
diff --git a/src/ldrobot-lidar-ros2/ldlidar_node/launch/ldlidar_with_mgr.launch.py b/src/ldrobot-lidar-ros2/ldlidar_node/launch/ldlidar_with_mgr.launch.py
index 520a937..f9e5612 100644
--- a/src/ldrobot-lidar-ros2/ldlidar_node/launch/ldlidar_with_mgr.launch.py
+++ b/src/ldrobot-lidar-ros2/ldlidar_node/launch/ldlidar_with_mgr.launch.py
@@ -49,7 +49,8 @@ def generate_launch_description():
     lc_mgr_node = Node(
         package='nav2_lifecycle_manager',
         executable='lifecycle_manager',
-        name='lidar/lidar_lifecycle_manager',
+        name='lidar_lifecycle_manager',
+        namespace='lidar',
         output='screen',
         parameters=[
             # YAML files