Shoulder creaking may be a normal phenomenon, or it may be caused by shoulder joint strain, frozen shoulder or soft tissue degeneration. 1. Normal phenomenon: If the shoulder creaks when you move it, and there are no other uncomfortable symptoms, it is considered a normal phenomenon, which is caused by the friction between the articular cartilages, and the creaking is usually not accompanied by pain. 2. Shoulder joint strain: the shoulder joint is compressed for a long time, and the shoulder joint is in a certain position or repeating a certain kind of action for a long time, without proper and timely treatment, which causes shoulder joint strain, shoulder joint pain, activity limitation, and creaking when the shoulder is moved. 3. Frozen shoulder: chronic specific inflammation of the shoulder joint capsule and its surrounding ligaments and tendons, characterized by pain around the shoulder joint and limitation of activities, and some patients will have the situation of creaking when they move their shoulders. 4. Soft tissue degeneration: with age, shoulder joint soft tissue degeneration, joint cavity synovial fluid secretion of the joint capsule is reduced, in the activities, will lead to soft tissue and the surrounding bony structures rubbing against each other, the shoulders move a little creaking performance. There may also be other reasons for the shoulder creaking, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.