Posterior shoulder pain can be treated with general therapy, medication, physical therapy and surgery according to the cause, which may be related to excessive exercise, myofasciitis, frozen shoulder, cervical spondylosis and so on. 1. Excessive exercise: Excessive shoulder and back exercise and workout can cause local lactic acid accumulation and physiological pain, which can be relieved after resting. 2. Myofasciitis: localized cold, trauma and other causes, resulting in aseptic inflammation of the muscles and fascia of the back of the shoulder. Consider taking ibuprofen or applying safflower oil to relieve the pain, as well as applying hot compresses, grilling and other physical therapy. 3. Frozen shoulder: it is the inflammatory reaction of the shoulder joint capsule or soft tissue degeneration caused by shoulder joint pain and activity limitation. You can take some non-steroidal anti-inflammatory drugs such as ibuprofen orally, and you can also have acupuncture done by professionals to relieve the pain. If the symptoms are serious and the effect of conservative treatment is not good, arthroscopic surgery can be used to loosen the local adhesion, and shoulder joint functional exercises can be carried out during the recovery period. 4. Cervical spondylosis: The cervical disc degeneration and herniation causes the nerve root that innervates the back side of the shoulder to be compressed, causing pain, numbness and other symptoms. When the pain is severe, anti-inflammatory and analgesic drugs such as ibuprofen can be taken orally to relieve the symptoms. Physical therapy such as shockwave and magnetic therapy can also be used. Surgery, such as anterior cervical spine surgery, can be considered if conservative treatment is ineffective. There are many other causes of posterior shoulder pain, such as trauma, cardiopulmonary diseases, etc. If the rest does not relieve, it is recommended to consult a doctor in a timely manner, improve the examination to clarify the cause of the disease, and follow the doctor’s instructions to carry out targeted treatment, do not self-medication, in order to avoid delaying the condition.