Lower back pain when sleeping and getting up to relieve it may be caused by physiological factors, lumbar muscle strain, lumbar myofasciitis, lumbar intervertebral disc herniation and other factors. 1. Physiological factors: sleeping with too hard a bedpan or too high a pillow can lead to muscle tension in the back and excessive pulling leading to lumbar pain. 2. Lumbar muscle strain, lumbar myofasciitis: due to prolonged heavy physical work or ambulation, can lead to lumbar myofasciitis, lumbar muscle strain, there will be pain back pain symptoms. It is mainly the soreness of the muscles of the lumbar back. 3. Lumbar disc herniation: lumbar disc herniation will compress the nerves, which will lead to lumbar pain, especially when lying in a soft bed, there will be poor support of the lumbar spine, which will cause pain. This symptom should pay more attention to observation, avoid prolonged standing and sitting, regular checkups, be alert to lumbar disc herniation and other diseases, seek medical attention as early as possible, and standardize treatment under the guidance of doctors.