Lumbar spine L4-5 stenosis surgery about three and a half months walking back soreness should pay attention to rest, through the diet of the body to help recovery. After the lumbar spinal stenosis surgery patients should pay attention to rest, do not be too tired, try not to lift too heavy objects, as little as possible to do bending movements, so as to avoid lumbar spine damage again. At the same time, patients need to combine their own situation to moderate exercise, enhance their own immunity, and maintain a happy state of mind, which will help the recovery of the condition. In addition, after the lumbar spinal stenosis surgery, if the patient does not recover well, it may cause osteoporosis. Therefore, patients also need to pay attention to their own body through dietary management, eat more food rich in calcium, vitamins and other nutrients, such as meat, dairy products, fish, fruits, vegetables, etc., and try not to eat spicy and stimulating food. If the patient’s symptoms of back pain after surgery are more serious, it is recommended to go to the hospital to do the corresponding CT examination to check the lumbar spine, and according to the doctor’s advice to carry out the appropriate treatment.