Sleeping in the middle of the night back pain during the day and nothing to consider sleeping posture, cold, lumbar disc herniation, lumbar fasciitis, lumbar muscle strain and malignant tumors, etc., suggest further examination. 1. If the mattress is too soft or too hard, as well as sleeping in an improper posture, do not pay attention to the warmth caused by the cold, etc. may lead to sleep for a period of time after the appearance of low back pain, discomfort. 2. Prolonged sedentary behavior, improper sitting and standing positions, etc. may lead to lumbar muscle strain, aseptic inflammation of the muscles of the lower back, and herniated lumbar discs, etc. The pain may not be obvious during the day due to work and exercise, and may become more obvious at night. 3. In addition, some malignant tumors may also cause obvious night pain, so further examination is needed to exclude the possibility of malignant tumors. If you have symptoms, you should go to the hospital in time, and standardize the treatment under the doctor’s guidance.