Patients with lumbar soreness while sleeping are mainly due to the following reasons: a. Patients with lumbar muscle strain, after engaging in physical activities in the lumbar region during the day, will lead to significant muscle spasm and edema in the lumbar region, which will cause muscle contraction during sleep, resulting in lumbar soreness. b. Patients with lumbar muscle strain, after engaging in physical activities in the lumbar region during the day, will lead to muscle contraction during sleep, resulting in lumbar soreness. After the bed is too soft, it will lead to extensive contact between the lumbar tissues and the bed surface, which will cause pressure on the lumbar tissues and lead to poor venous return, which will cause stasis of blood in the lumbar tissues and cause soreness and swelling in the lumbar region. Third, it is seen in cold, especially when sleeping without paying attention to the warmth of the waist, after the invasion of cool air, it is easy to cause the muscle fascia of the waist in a state of spasm, thus causing the symptoms of lumbago.