Bilateral lumbar pain during sleep can be caused by night cold lumbar muscles are not fully relaxed, but also need to consider lumbar muscle strain, lumbar fasciitis, lumbar intervertebral disc herniation and other factors. 1. Lumbar muscle strain: Lumbar muscle strain can lead to chronic injury of bilateral lumbar muscles, which can cause pain and discomfort in the bilateral lumbar region during sleep. 2. Lumbar dorsal fasciitis: Lumbar dorsal fasciitis can occur in the bilateral lumbar fascia aseptic inflammation, stimulated by the inflammation can occur in the lower back pain symptoms. 3. Lumbar disc herniation: Lumbar disc herniation can be manifested as lumbar pain and lower extremity radiating pain and other symptoms, accompanied by lower extremity numbness, weakness and claudication, etc. Improper lumbar posture during sleep can lead to increased nerve compression, triggering bilateral lumbar pain symptoms. 4. Other diseases: when bilateral lumbar trauma, can lead to local soft tissue injury, bilateral lumbar pain symptoms, bilateral kidney cysts, kidney stones and other lesions, can also be in the bilateral lumbar pain symptoms. When bilateral lumbar pain occurs during sleep, persists without relief or gradually aggravates, you should consult a doctor in a timely manner, and under the guidance of a specialist, actively carry out the appropriate treatment, which will help to alleviate the uncomfortable symptoms as soon as possible.