If the shoulder joint is rattling and painful, it is considered to be due to long-term chronic strain on the shoulder joint, degeneration of the shoulder joint, or poor recovery from acute injury to the shoulder joint, resulting in contracture, hyperplasia, and hypertrophy of the soft tissues around the shoulder joint, or hyperplasia and degeneration of the bones of the shoulder joint and narrowing of the joint space. As a result, the degenerated and thickened joint soft tissues may rub against the shoulder joint during activity, causing a rattling sound, and also stimulating the surrounding sensory nerves, which is the main cause of pain. In this case, it is necessary to go to the hospital for an X-ray examination to exclude serious lesions of the bone. If there is no obvious abnormality, local anti-inflammatory and analgesic, blood circulation and blood stasis support symptomatic treatment, and also physical means, such as hot compresses, physiotherapy, massage, acupuncture, etc., can be used to relieve the symptoms.