Oligopeptide is a kind of protein, the effect can lower blood lipid, lower blood sugar, improve human immunity. In the clinic, the effect of oligopeptide is mainly reflected in inhibiting the rise of cholesterol, promoting the secretion of insulin, regulating the blood sugar of human body and improving the symptoms of diabetes, and also impeding the effect of angiotensinase, which has the effect of lowering blood pressure, and has a certain regulatory effect on high blood lipid, high blood sugar and high blood pressure. Oligopeptide can also improve immunity, which has good effect on stimulating the proliferation of lymphocytes, enhancing the phagocytic ability of macrophages, improving the body’s ability to resist the infection of external pathogens and reducing the morbidity of the body.