Sleeping for a long time the waist appears swelling and pain, the common reasons are as follows: First, during long sleep, the muscles of the low back are continuously compressed, there will be symptoms of low back swelling and pain, there is a direct correlation with the lack of blood supply to the muscles of the low back, through massage, hot compress and other treatments, the symptoms can be quickly relieved. Secondly, during sleep the low back is cooled or damp, resulting in tension swelling and pain in the low back muscles, which is related to the low room temperature and cold weather, and the symptoms of swelling and pain can be quickly relieved by local hot compresses. Third, during sleep, the waist for a long time to maintain a bad posture, such as twisting, can lead to continuous stretching of the muscles of the low back, causing muscle stiffness, tension and swelling symptoms, after adjusting the posture of the waist, and local physiotherapy, the symptoms can be relieved.