Fifty-year-old shoulder pain is generally caused by shoulder trauma, muscle strain, frozen shoulder, shoulder joint degeneration and cervical spondylosis. 1. Shoulder trauma: Fifty-year-old middle-aged and elderly people may bump into hard objects because of the shoulder, resulting in shoulder soft tissue trauma, thus causing shoulder pain. 2. Muscle strain: some middle-aged and elderly patients in their fifties have been engaged in heavy physical labor for a long time or often overworked, resulting in shoulder muscle overstrain, which can also cause shoulder pain. 3. Frozen shoulder: Frozen shoulder is due to the human body’s shoulder joint has chronic activities or a long time cold, so that the shoulder and the surrounding muscle fiber tissue adhesion, hardening. This leads to the weakening of muscle strength, toughness and elasticity, and pain in the shoulder joint area will occur. Fifty years old is the most common people with frozen shoulder, and also prone to shoulder pain. 4. Degenerative changes of shoulder joint: with age, at about fifty years old, the cartilage in the shoulder joint will degenerate and break, leading to cervical spondylosis and soft tissue injuries, causing shoulder pain symptoms. 5. Cervical spondylosis: The nerve root type of cervical spondylosis can cause pain in the shoulder area due to compression of the cervical nerve and radioactivity. Fifty years old is the age of high incidence of cervical spondylosis, and it is easy to have shoulder pain caused by cervical spondylosis. When shoulder pain occurs in the age of fifty, it is recommended to go to the hospital in time for examination, to clarify the cause of the disease, and to be treated correctly under the guidance of a professional doctor.