Lumbar cold is a common clinical complaint symptom, which can be explained from two aspects. First, from the perspective of Western medicine physiopathology, lumbar cold is mostly due to long-term lumbar muscle strain or other diseases of the lumbar spine that cause tension and spasm in the lumbar muscles, resulting in a reduced blood supply to the middle of the lumbar muscles. As we all know, the body’s arterial blood can bring energy, warmth and heat to all parts of the body, in the case of insufficient blood supply to the muscles, it will cause the blood volume of the muscle muscle gap to decrease, thus feeling cold in the waist. Secondly, if we live and work in a cool and humid environment for a long time, it will also prevent the muscles from getting an effective supply of arterial blood, thus causing a cold waist.