Many patients experience pain in the shoulder joint, and many attribute the pain in the shoulder joint region to frozen shoulder, due to lack of proper diagnosis and treatment. The delay in treatment leads to aggravation of pain and limitation of joint movement. In fact, the shoulder joint is a very complex joint, there may be many diseases, the clinical manifestations of these diseases will be very similar. For example, pain in the shoulder joint. It is not possible to lift the shoulder, women cannot button their backs, and the pain sometimes worsens at night, even seriously interfering with sleep. Common causes include impingement syndrome, tendonitis of the long head of the biceps tendon, injury to the glenoid labrum of the shoulder joint, and so on. Some shoulder pain can be relieved with medication, some require functional exercises, and some can be closed. Some patients have to undergo surgery. Therefore, patients with shoulder pain should not ignore their symptoms and consult an experienced shoulder specialist for proper diagnosis and treatment in order to get satisfactory results.