Lumbar spinal stenosis is a very common clinical disease, and most patients can achieve better results through traditional conservative treatment. Surgery is only considered when the pain in the lower back or lower extremities is severe, or when the symptoms of intermittent claudication are severe. The indications for surgery for lumbar spinal stenosis are: 1) severe pain in the lower extremities or accompanied by low back pain, which cannot be controlled by non-surgical treatment; 2) continuous pain in the lower extremities and intermittent claudication for 3-6 months, and no effect of systematic conservative treatment before considering surgery; 3) severe nerve compression or progressive loss of nerve function, with weakness of the limbs and difficulty in walking, etc., to consider surgery 4.If spinal stenosis occurs, the compression of the cauda equina nerve is very serious and causes cauda equina syndrome, surgery should be considered.