Causes of lumbar spinal stenosis: there are two kinds of primary and secondary lumbar spinal stenosis, secondary is secondary to lumbar disc herniation, vertebral slippage and other lesions; I focus here on the normal aging of primary spinal stenosis, because it is insidious, long course, the condition makes it difficult to choose between conservative and treatment, and conservative treatment is not effective. Prevention: 1. Prevention of spinal stenosis begins with good lifestyle habits, such as not sitting or keeping your head down for too long, etc. 2, do not sit or stand, or ambulate work for too long. 3, usually pay more attention to reasonable labor posture and good living habits. When lifting heavy objects, hip and knee bending squatting, when sleeping, the best position of the head and neck for the natural neutral position. Treatment: When the treatment of lumbar spinal stenosis is mild, conservative treatment can be chosen, mainly drugs to relieve symptoms, acupuncture and physical therapy, etc. In general, surgery is not necessary. Traditional surgery: After getting lumbar spinal stenosis, if conservative is not effective, open surgery from the posterior can be considered. The main purpose is to decompress and expand the spinal canal. When the stability of the spine is poor, it is necessary to use internal fixation, that is, “steel nails” to refix the spine.