The common causes of back cold are mainly the following: a. Cold shower after strenuous activities of patients can cause cold invasion, inducing cold and viral infection, manifesting as coldness, fear of cold, back cold and other symptoms. Patients are advised to take strong cold tablets and amoxicillin orally, and for patients with cough and coughing, add Xuanlung and cough suppressant combination. At the same time, drink more hot water to promote the metabolism of cold in the body and reduce the symptoms of cold back. Second, elderly patients can have cold back because of the weakened yang energy in the body and body deficiency. It is recommended that patients strengthen exercise and eat more beef, mutton, angelica, aconite and other foods to replenish blood and qi, so as to improve the performance of cold back. Third, if the patient’s back blood vessel occlusion, can cause local tissue ischemia, hypoxia, and cause back cold. The arterial blood vessels can be dilated by oral haemosiderin and beraprost to improve blood circulation and reduce the symptoms of back chills.