The pain in the caudal vertebrae of the patient after getting cold is because after getting cold in the sacrococcygeal area, the muscles in the sacrococcygeal area will be in a state of contraction, tension and spasm, resulting in the increase of pressure in the muscles which can stimulate the nerves in the muscles and cause the patient to have pain. In addition, when the sacral tail area is cold, it will also affect the normal operation of qi and blood in the sacral tail area, and the local qi and blood in the muscles will not work and the meridians will be blocked, which can also produce pain and swelling, and in serious cases, it will affect the patient’s bending activities. In the treatment, hot compress treatment can be given, using towel hot compress, hot bath, physiotherapy instrument baking electricity, microwave instrument treatment and other methods to improve the temperature of the sacral tail area, promote vascular diastole and relieve the patient’s pain performance.