The common causes of shoulder pain include soft tissue injury, cervical spine disease, frozen shoulder and so on. 1. Soft tissue injury: playing ball, heavy physical labor and other reasons may cause soft tissue injury around the shoulder, muscle strain and other conditions, resulting in shoulder pain. 2. Cervical spine diseases: Cervical spine diseases such as cervical spinal stenosis and cervical disc herniation can cause cervical spine pain, and if there is compression of the nerve root, the pain will radiate to the shoulder, and is usually accompanied by numbness at the same time. 3. Frozen shoulder: Frozen shoulder is also known as periarthritis of the shoulder joint, commonly known as condensed shoulder and fifty shoulders, and the main symptoms include shoulder pain and restricted movement. Shoulder pain may also be caused by other reasons, if the pain can not be relieved or the pain is severe, you should go to the hospital in time to find out the cause and carry out targeted treatment.