There are two more common causes of back pain after lying for a long time, as follows: 1, the patient’s long-term sedentary or poor posture leading to lumbar muscle strain, but this strain is not serious, only after long-term bed rest will show pain, so for this pain it is recommended that patients avoid sedentary, although lying for a long time will hurt, but still more lying rest. 2, long-term bed rest can not turn over or can not turn over in a timely manner. Back pain caused by damage to the muscles and skin of the back, this situation suggests that patients buy special equipment, such as turning beds, to assist in turning over, to avoid long-term the same position, because of long-term pressure and lead to pain.