Waking up in the morning with a stiff and painful back can be caused by a poor sleeping environment, a cold back or fasciitis. 1. Poor sleeping environment: If the mattress is too soft or the bed board is too hard, in order to maintain the position of the thoracic and lumbar vertebrae, the muscles of the back continue to exert themselves during sleep, and long-term muscle contraction and spasm will occur, resulting in back stiffness and pain. 2. Cold back: If your back catches a cold while you are sleeping, the blood circulation in your back is not smooth, causing muscle spasms, which will also cause stiffness and pain in your back when you get up in the morning. 3. Fasciitis: Fasciitis refers to the pathological changes in the fascia, if the back muscles for a long time muscle strain, there may be back fasciitis, which causes the back muscle fascia of various discomforts, such as back pain, muscle tension, muscle spasms, etc., so the morning wake up back stiffness and pain may also be caused by fasciitis. Because of the causes of stiffness and pain in the back in the morning are more reasons, so when the patient appears related to the discomfort symptoms, it is recommended to go to the hospital in a timely manner to check the diagnosis, as soon as possible to clarify the cause of the disease to take targeted therapeutic measures, to avoid misunderstanding of the condition caused by the aggravation of the symptoms.