After rotator cuff injury needs to be braced first external fixation braking, 3 weeks after the injury can be gradually exercise. However, it is important to pay attention to the gradual progress. If the rotator cuff injury is not completely torn, you can choose conservative treatment, but need to be braked in the early stage. Rehabilitation training can be carried out after 3 weeks of treatment, and passive training can be carried out under the guidance of the rehabilitator first, such as external rotation, internal rotation, forward flexion and backward extension of the shoulder joint. After 3 to 6 weeks of treatment, you can gradually transition from passive to active training, such as climbing walls and lifting the upper arm. After 12 weeks of treatment, you can use dumbbells and other equipment for muscle strength training. Rotator cuff injury should gradually increase the amount of training within the tolerable range, so as not to aggravate the condition. Ice packs are recommended after training to relieve pain.