If patients often have wind-cold and flu, it is usually due to the following factors: first, the basic physical condition is too weak or the immunity is low, which is especially vulnerable to wind and cold, for example, if the body lacks multi-vitamins or multi-microelements, which will result in low immunity. Secondly, in the secondary low immunity disease, there will also be frequent wind-cold and cold, for example, the body has severe anemia, blood system tumors or tumors in advanced stage, which will also lead to secondary immune dysfunction, and thus will be infected with wind-cold and lead to cold. Third, patients with relatively poor basal metabolic rate, such as diabetes mellitus or hypothyroidism, are also prone to recurrent wind-cold colds.