Pain in the back area while sleeping at night may be due to the following reasons: 1. Overexertion in daily life, or heavy physical labor during the day, or carrying heavy objects for a long time, resulting in muscle fatigue or strain in the back area, leading to pain in the back during sleep at night. 2. It may be due to incorrect posture during sleep at night, or maintaining a certain posture for a long time, with local compression, resulting in 3.Back pain is induced by wind and cold stimulation of the lumbar region, or by diseases such as fasciitis in the back area. 4.Pain may be induced by inflammation of the lungs, or local muscle ischemia, etc.