There are many patients with shoulder pain, but most of them do not pay attention to the pain in its early stages. Due to the lack of reasonable and effective diagnosis and treatment in the early stages, the pain is often further aggravated and the movement of the shoulder joint is limited, and they often take it for granted that they have frozen shoulder. In fact, almost most of the shoulder pain is not frozen shoulder, but a disease of the shoulder joint, such as tenosynovitis, rotator cuff injury, supraspinatus tendonitis, subacromial bursitis, acromion impingement, etc., which can become a chronic process and make treatment difficult. Therefore, it is recommended that patients with this type of condition be seen as early as possible in an outpatient clinic, so that they can be diagnosed clearly and treated appropriately.