Immune function usually refers to the body’s ability to resist external adverse factors. Immune function is mainly manifested as immune prevention, immune stability and immune monitoring, which can effectively remove the influence of pathogenic microorganisms and other foreign substances. The immune function is mainly accomplished through immune cells, if the immune function is low, it will easily cause the human body’s organs and tissues to become disturbed, causing the human body to have various adverse diseases, which can seriously induce incurable diseases and even cause death. Once the body has a low immunity, you must go to the hospital in time to diagnose, under the guidance of the doctor to take the appropriate drug treatment, do not ignore, otherwise it is easy to cause the deterioration of the condition, easy to cause adverse effects on human health and life expectancy.