diff --git a/common_sensor_launch/launch/nebula_node_container.launch.py b/common_sensor_launch/launch/nebula_node_container.launch.py
index d46805aa..cab08001 100644
--- a/common_sensor_launch/launch/nebula_node_container.launch.py
+++ b/common_sensor_launch/launch/nebula_node_container.launch.py
@@ -355,6 +355,15 @@ def add_launch_arg(name: str, default_value=None, description=None):
     add_launch_arg("use_intra_process", "False", "use ROS 2 component container communication")
     add_launch_arg("lidar_container_name", "nebula_node_container")
     add_launch_arg("output_as_sensor_frame", "True", "output final pointcloud in sensor frame")
+    add_launch_arg(
+        "blockage_diagnostics_param_file",
+        os.path.join(
+            common_sensor_share_dir,
+            "config",
+            "blockage_diagnostics.param.yaml",
+        ),
+        description="path to parameter file of blockage diagnostics node",
+    )
     add_launch_arg(
         "vehicle_mirror_param_file",
         description="path to the file of vehicle mirror position yaml",