In addition to falling pillow itself can cause back pain, back pain may also be combined with myofasciitis, trauma, cervical spondylosis and other causes. 1. Pillow fall: sleeping with too high or too low pillow or inappropriate hardness and softness, etc., can make the neck muscles tense, spasm, pain, stiffness, and can be discharged to the upper back. 2. Myofasciitis: due to cold or other reasons, the muscles and fascia are damaged, causing the release of inflammatory mediators, which may lead to muscle pain in the back. 3. Trauma: direct violent blows to the back, resulting in soft tissue injuries or fractures of the muscles of the back, which may cause pain. 4. Cervical spondylosis: cervical spondylosis itself straightens the physiological curvature or muscle ankylosis, causing inflammatory substances to ooze out, plus it will stimulate the muscles and the surrounding nerves, resulting in muscle adhesions, causing back pain. Back pain caused by falling sleep may also be combined with other causes such as heart disease, etc., if it continues to be unrelieved, it is recommended to go to the hospital in a timely manner to improve the relevant examinations, to clarify the cause of the disease under the guidance of the doctor to standardize the treatment, to reduce the adverse effects of the disease.