The common causes of lumbar pain in bed include the following factors: 1. Patients’ mental and neurological factors, including long-term mental tension, mental depression and excessive emotions, affect the quality of sleep and cause excessive tension in the body during sleep, resulting in lumbar pain in the morning. 2. The patient’s lumbar muscles are strained and damaged, which can also produce the symptoms of morning lumbar pain. 3, the patient has a previous lumbar muscle strain, lumbar muscle sprain, during sleep can not ensure that the lumbar muscles are fully relaxed, the symptoms of morning lumbar pain. 4, the night sleep may be cold lumbar, local blood circulation becomes poor, so that the accumulation of metabolic products, will lead to the appearance of morning lumbar pain symptoms. It is recommended that patients go to the hospital for a detailed examination to clarify the diagnosis and then carry out the corresponding treatment.