The pain and soreness under the shoulder is mainly due to the following reasons: a. The pain is induced by strain on the muscles and soft tissues of the shoulder in daily life, or by strain on the local muscles. Second, the pain and soreness is induced by local nerve, blood vessel and joint lesions. After this happens, the patient should go to the hospital in time to find out what causes it, and then give appropriate treatment measures, such as local massage, local hot compress, acupuncture, physiotherapy or local topical ointment to activate blood circulation and remove blood stasis, and oral treatment with different drugs.