Calcific rotator cuff is an inflammatory condition in which calcium salts are deposited in the degenerated tendons of the rotator cuff. There are two types: acute and chronic. Acute type: There is a history of sudden onset of acute pain in the shoulder joint. The patient holds the elbow and fears any movement of the shoulder joint in any direction. The head of the humerus has obvious redness, swelling and heat, and there is severe limited pressure pain on light pressure; the shoulder joint is limited in all directions. Local closure is the best treatment. A needle is inserted into the calcium deposit of the tendon and injected, causing it to break down and spill into the subacromial bursa and gradually be absorbed. Sometimes the foci of calcium deposits in the tendon may break down on their own and the symptoms are eliminated. Local ice packs. Shoulder joint movement should be started as soon as possible after the pain is relieved to prevent joint adhesions. Chronic type: This is characterized by hardening of the calcium deposits in the rotator cuff. Most of them have a history of multiple episodes of acute shoulder pain. The treatment is the same as for the acute type. If the pain does not decrease or if conservative treatment is ineffective, surgery should be performed. At present, minimally invasive arthroscopy is effective in clearing the deposited calcified foci.