Treatment of degenerative lumbar spine disease, particularly lumbar spinal stenosis, often involves decompression, fixation, and fusion of the spine. With advances in surgical techniques, most patients with spinal fusion can achieve immediate spinal stability. This makes early rehabilitation possible. It is generally accepted that early and moderate functional training has the following advantages: 1. The muscles damaged during surgery play an important role in maintaining spinal stability. Rehabilitation training to restore function to these muscles as soon as possible can reduce the increased stress caused by spinal instability; 2. Increased postoperative bed rest may lead to stiffness and limited movement of the spine. Early gentle movement of the lumbar back muscles, abdominal muscles, and the muscles of the hip and pelvis connected to the spine can ensure that the intervertebral joints maintain a certain degree of mobility, laying the foundation for further functional training. 3, early functional training can also increase the local blood supply and oxygen supply for surgery and promote wound healing. This article is only for postoperative rehabilitation after lumbar spine fixation and fusion surgery, if the patient has serious osteoporosis and other conditions, it is necessary to follow medical advice for postoperative rehabilitation. 1. The main purpose of early postoperative bed rest is to perform deep breathing exercises to prevent lung infection. 2. During the postoperative bed rest period, pay attention to the movement of the lower limbs to prevent complications such as venous thrombosis of the lower limbs caused by slow blood return. 3.During the postoperative wound healing process (generally 10 days after surgery), pay attention to reduce the time of lying down, alternate between lying down and lying on the side, and do not lie down continuously for more than 4 hours. 4.In order to ensure the fusion of bone graft and prevent the displacement of bone block, we generally recommend patients to stay in bed for at least one week after surgery, and then they can get out of bed under the protection of brace. 5.During the period of bed rest, pay attention to the activities of limb joints and the maintenance and training of muscle strength in order to reduce the atrophy and weakness of limb muscles caused by bed rest. 6.It is important to carry out lower limb muscle elevation and pulling training early after surgery, which helps to prevent nerve root adhesions and scar formation. Specific method: Nerve pulling training can be performed in the supine position by straightening the lower limb and slowly lifting it off the bed until tension is felt in the posterior thigh. The leg can be lifted with the aid of a hand under the knee, while keeping the knee joint straight and the ankle joint dorsiflexed. The quadriceps pull should be performed in the supine position with the heel as close to the buttocks as possible. Each pull can last for 10 seconds and be repeated 3 times, on the left and right side respectively. If the patient tolerates it well, it can be repeated every 2 hours. 7, within 1 month after surgery, rest is the main focus, except for activities such as going to the toilet that must be up, the rest of the time is best to bed. 8. 1 month postoperative outpatient review, according to the outpatient review, decide on further postoperative rehabilitation program. It is totally wrong to give up training for fear of fusion failure. Although doctors have different views on the method and intensity of training, studies have shown that good postoperative rehabilitation is very beneficial to improve the fusion rate and surgical outcome. The specific training program should be selected according to the different stages of the patient’s postoperative period and the fusion of the implant.