If the rotator cuff injury is mild, it can usually heal with 3-4 weeks of rest. If the rotator cuff injury is severe, surgery may be required if necessary, and the recuperation time should be at least 3 months, and some patients may need half a year or more. Rotator cuff injuries are mainly caused by violent violence to the shoulder joint, resulting in damage to the local muscles or ligaments, mainly manifesting as pain and impaired movement of the shoulder joint. After rotator cuff injury, the shoulder joint should be suspended and braked with a triangular scarf to reduce the shoulder joint activity to promote the absorption of local edema and reduce the inflammatory response, and at the same time, you can cooperate with functional exercises of the shoulder joint. When the pain is severe, you can take oral non-steroidal anti-inflammatory and analgesic drugs, and you can also cooperate with local heat compresses and other physical therapy. In addition, patients should pay attention to diet and nutrition and avoid straining during the resting period of rotator cuff injury.