Back pain may be caused by the following reasons: 1, may be back fasciitis, usually the back muscles for a long time, such as heavy labor or back muscle exercise, can appear back muscle strain, a long time will lead to chronic sterile inflammation of the back fascia; 2, may be the mattress problem, the mattress is too soft or the bed board is too hard can lead to When sleeping, the back muscles must be contracted for a long time to maintain the correct position, which can easily lead to back fatigue pain, usually early morning activities, relax the muscles to promote local blood circulation, the pain will soon be relieved, but if the mattress is not replaced, a long time will also lead to back muscle strain and long-term pain.