Back pain is mainly caused by myofasciitis and small joint disorders due to overwork, degenerative spinal lesions and tumors, osteoporosis, autoimmune diseases such as ankylosing spondylitis. 1. Myofasciitis and small joint disorder caused by overwork, mostly caused by muscle tension and spasm due to keeping the same posture for a long period of time, and local overstretching can also cause small joint disorder resulting in pain on the top of the back. 2. Degenerative changes of the spine and tumor lesions, such as intervertebral disc herniation, spinal stenosis, malignant tumors of the vertebral body, etc., combined with the history and the corresponding auxiliary examination can be clearly diagnosed. 3. Osteoporotic lesions, usually without fixed pain points, mostly occurring in menopausal women and elderly patients. 4. Autoimmune disease ankylosing spondylitis, most patients have morning stiffness, night pain is obvious, most patients have positive hematological examination HLAB27. The causes of pain on the upper back are more, if located on one side also consider with visceral diseases caused by involving pain, such as coronary heart disease, cholecystitis and gallbladder stones, etc., need to go to the hospital in time to clarify the cause of the disease.