The more common cause of shoulder pain is frozen shoulder, which may also be caused by chronic strain on the local muscles and ligaments due to long-term heavy physical labor. First of all, you can choose hot towels for external application to the local area, and then you can apply some pain-relieving drugs, such as etofenacin gel or diclofenac sodium gel, and you can also choose drugs that activate blood circulation and remove blood stasis locally, such as safflower oil and swelling pain aerosol for treatment. If you are not allergic to alcohol, you can also choose local rubbing of medicinal wine. In addition, you can also combine the treatment with creams such as pain-relieving paste and flurbiprofen babu cream, etc. Take proper rest and avoid overexertion in the shoulder joint area. For general chronic strain injury or frozen shoulder, it can be improved significantly in one to two weeks. If the pain persists, it is still necessary to have a timely examination, such as an X-ray or MRI of the shoulder joint, to help determine if there is a serious condition.