In general to improve immunity can not be obtained through the diet quickly, through a reasonable diet, active exercise, when necessary, the use of immune-enhancing drugs and other comprehensive to regulate. Improve human immunity need scientific diet, nutritional balance, including vegetables, fruits, dairy, cereals, meat, beans, etc., as well as the right amount of oil, salt, etc., protein-rich meat, eggs and milk, as well as vitamin-rich vegetables and fruits can be appropriate to increase their intake. It is also necessary to carry out appropriate exercise, such as jogging, swimming, weight lifting, etc., to enhance physical fitness, thus helping to improve immunity. Clinical immunity-enhancing drugs include transfer factor, thymidine, splenic aminopeptide, pidomod, etc. These drugs should not be used blindly and should be taken under the guidance of a doctor. Drugs to improve immunity are immunomodulators, which can enhance the immune function of the body, and tend to be mostly used for serious infections, tumors, and groups with immunodeficiency.