If the patient exists lying down for a while on the back pain, may be due to the following reasons: First, there may be a lumbar fasciitis, this kind of disease is often due to the patient’s previous trauma or cold factors, and then make the lumbar deep fascia to produce aseptic inflammation. When the patient is lying on his back, it will cause the fascia to be stretched, which will aggravate the inflammation and induce pain. Second, may be caused by lumbar muscle strain, patients will be long-term due to such diseases exist in the lumbar pain and fatigue, such patients once lying on their backs will lead to lumbar fatigue aggravation, and then produce lumbar pain. Third, common in patients with lumbar vertebral body slippage, once the patient has such a disease, in its lying down may make the vertebral body forward slippage, which leads to the relevant nerve compression lumbago.