Lumbar spinal stenosis refers to a group of syndromes in which the lumbar spinal canal or intervertebral foramina is narrowed due to congenital or acquired factors, which in turn causes compression of lumbar spinal nerve tissues and blood circulation disorders, resulting in pain in the buttocks or lower extremities, neurogenic claudication, and symptoms of lumbago with or without low back pain. The “Chinese Expert Consensus on Surgical Treatment Specification for Lumbar Spinal Stenosis (2014)” formulated by the Chinese Expert Consensus Group on Surgical Treatment Specification for Lumbar Spinal Stenosis was published in the September 23, 2014, Volume 94, Issue 35 of the Chinese Medical Journal. Nine consensus points are summarized as follows: 1. Intermittent claudication is a typical sign. Intermittent claudication is a typical sign. In addition, neurogenic claudication may exist in special positions, relieved by forward leaning, forward bending, squatting, and aggravated by hyperextension. Some of them have low back pain and radiating pain in the lower limbs, which may be accompanied by sensory abnormalities, such as numbness, soreness, pins and needles sensation, and coldness of the limbs. 2. This disease is typically characterized by many symptoms and few signs. 3. 3. CT and MRI show hyperplasia of ligamentum flavum and articular eminence, osteophytes on the upper and lower margins of the diseased vertebral body, which compress the nerve root or dural sac, and a herniated intervertebral disc that compresses the dural sac of the same segment and the nerve root unilaterally or bilaterally. 4. In the early stage of the disease, patients can get better treatment by resting in bed, and moderate traction is feasible. Avoid wearing lumbar support for a long time. 5. Massage, acupuncture, electrotherapy, heat therapy have some near-term efficacy, but the long-term efficacy is not clear. 6. Indications for surgical treatment are: severe pain in the lower limbs; objective signs of nerve damage, such as decreased sensation in the lower limbs, muscle atrophy, decreased muscle strength in the lower limbs; typical neurogenic intermittent claudication symptoms, walking distance <500 m; persistent symptoms and ineffectiveness of conservative treatment for 3 months. 7. Surgical principles: formulate individualized treatment plan; remove all compression-causing materials (hyperplastic bone, ligamentum flavum, intervertebral discs, and small joints); optimize the decompression sequence (start from the place where the relative compression is lighter, and most of them gradually decompress from the midline to the two sides); limited decompression, and try to preserve the structure of the crusade as much as possible. 8. Strategies for selection of surgical methods 9. Routine postoperative X-ray examinations at 1, 3, 6 months, and 1 year, and if necessary, MRI examination is possible.