Pain at the shoulder joint when swinging the arm may be related to trauma, cervical spondylosis or frozen shoulder, which needs to be treated by braking, changing bad habits, hot compresses, medication and functional exercises. 1. Trauma: Shoulder head connection may be due to trauma caused by bumping or collision, when the arm swing pulls the injured part and pain occurs, if it is only a mild muscle injury need to rest, shoulder head part of the brake, usually about a week and gradually get better. 2. Cervical spondylosis: cervical spondylosis can occur when the arm swing shoulder joint pain, need to change bad habits, such as can not look down at the phone for a long time, etc., the local can be hot compresses, physiotherapy, etc.. 3. Frozen shoulder: shoulder joint pain and activity limitation can also appear, need functional exercise, if the pain is more severe can follow the doctor’s advice to take ibuprofen and other analgesic and anti-inflammatory drugs. There may be other reasons for the pain in the shoulder joint when the arm is swinging, if it does not get better or aggravated after resting, you should go to the regular hospital in time, and the doctor will judge the cause of the disease according to the symptoms, signs and auxiliary examination, and give the correct treatment for the cause.