If the legs below the knee joint are cold during the three volt days, it is usually considered to be related to Yang deficiency and Yang deficiency. In addition, it is important to take a moderate amount of exercise, such as jogging for half an hour every day. In addition, the diet should also pay attention to this time, avoid cold food, eat beef and mutton and other warm food for dietary supplements, and pay attention to the room air conditioning temperature should not be too low, pay attention to body warmth, if the above treatment is not very obvious relief of symptoms, can be taken by oral Yi Qi Yang tonic Chinese medicine for regulation.