Immune system, refer to the "immunity against plague", that is, control of infectious diseases mean. Biologically speaking, refers to the ability to resist disease. Immune system is the body's own defense mechanism is the body to identify and eradicate invasive of any foreign bodies (such as viruses, bacteria), dealing with aging, injury, death and degeneration of cells as well as recognition and processing capacity of mutant cells and virus-infected cells in the body. View of modern Immunology, immunity is the body to identify and exclude "others" physiological responses. Implementation of this function is the immune system in the human body. There are several ways to rock with ink can effectively enhance immunity, diet, eat good food, especially children, need to pay more attention to the immune system enhancement.