Rotator cuff tears are a more serious condition of rotator cuff injury in the shoulder joint. Rotator cuff tears can be categorized into partial and complete tears depending on the extent of the injury. Partial tears include bursal side tears and synovial side tears of the rotator cuff. Complete tears include longitudinal and transverse ruptures, atrophy of the supraspinatus tendon, and extensive tearing of the rotator cuff. Complete tears are more severe than partial tears and often require surgical repair. Symptoms include significant pain around the shoulder joint, localized swelling and bruising, and immobility of the shoulder joint. Partial tear, sometimes there can be no obvious pain, but if the patient’s upper arm lifts the shoulder joint or internal and external rotation, the torn rotator cuff area will produce pain, resulting in limited shoulder lifting function, and need to be braked and rested. It is recommended that the patient consult a doctor in time to clarify the extent of the injury and follow the doctor’s instructions for treatment.