The prevention of lumbar spinal stenosis is actually the prevention of lumbar degenerative lesions. (1) waist protection: sleep in a soft and hard bed, avoid sleeping in a bed that is too hard or too soft, so that the lumbar muscles get sufficient rest; avoid the waist being attacked by wind and cold, avoid the waist being in a posture for a long time, the muscles are not balanced, causing strain on the waist. (2) waist application: correct use of the waist, when lifting heavy objects should first squat, when using the waist for too long should change the posture of the waist, more lumbar activities, to prevent the gradual occurrence of strain injury, due to the nature of work and excessive use of the waist or has produced a mild strain injury, should be used early lumbar pain Ning capsules and other drugs to avoid further aggravation of strain injury, and eventually cause degenerative changes in the lumbar spine. (3) lumbar health care exercise: adhere to the lumbar health care exercise, often carry out activities in all directions of the lumbar spine, so that the lumbar spine always maintain a state of physiological stress, strengthen the lumbar muscle and abdominal muscle exercises, the strength of the lumbar muscle and abdominal muscle is strong, can increase the stability of the lumbar spine, the ability to protect the lumbar strengthen, to prevent degenerative changes in the lumbar spine. We believe that swimming is a very beneficial exercise for the middle-aged and elderly, under the buoyancy of the water, our lumbar spine and lower limb hip and knee joints are not carrying gravity when moving underwater, while swimming can ensure the exercise of our lumbar back muscle ligaments as well as lower limb muscle strength, and promote the recovery of lumbago disease.