Rotator cuff injuries generally take about 3 to 6 months to recover, depending on the degree of injury. Mild to moderate injuries should be treated conservatively as much as possible and the recovery time is about 3 months, while severe injuries should be treated with surgery for internal and external fixation and the recovery time after surgery should be 6 months or even longer. 1. Early stage after injury: the shoulder joint should be protected to the maximum extent, wearing a sling brake under the guidance of the doctor, mild manipulation of the shoulder joint muscle relaxation, active assisted and passive movement of the shoulder joint and scapula to improve muscle strength and joint mobility. 2. Middle stage after injury: Should carry out muscle strength training for shoulder joint adduction, abduction, forward flexion and posterior rotation, and muscle strength elevation for internal and external, up and down, and rotation of scapula, to carry out the degree of joint stabilization. 3. Late stage of injury: then continue to strengthen the degree of joint stabilization, be able to carry out functional activities in a painless state, further increase the toughness of the rotator cuff muscle groups, and return to the normal functional state. The recovery time for rotator cuff injury varies according to individual physical fitness and sports conditions, and should be gradual to avoid secondary injury.