Postoperative rehabilitation training of rotator cuff injury mainly includes shoulder joint mobility training, muscle strength training and other exercise methods. 1. 0 to 6 weeks after surgery: wear a brace, prohibit joint mobility training, mainly focusing on isometric muscle strength training of the shoulder muscles on the affected side, and the activities of the elbow, wrist and hand on the affected side. With the recovery process, the range of motion should be increased as tolerated. 2. 7 to 12 weeks after the operation, limit the lifting over the head movement, can carry out shoulder joint forward flexion, internal rotation, external rotation, abduction and other range of activities. After exercise, massage the periapical region and relax the local muscles. 3. After 12 weeks after surgery, muscle strength training can be carried out, such as shoulder joint forward flexion, internal rotation, external rotation, abduction impedance training, etc., to exercise the muscle groups around the shoulder joint. Postoperative rehabilitation training for rotator cuff injury should be carried out under the guidance of rehabilitation therapist, paying attention to the exercise intensity and amplitude to avoid secondary injury.