Flavonoids have the effect of antioxidant and regulating lipid metabolism in the body. Flavonoids are a strong antioxidant, can remove oxygen free radicals in the body, to stop cell degeneration, aging has a certain role. Flavonoids can also regulate the body’s lipid metabolism, cholesterol reduction has a certain help, may have a certain reduction in the incidence of cardiovascular disease as well as improve the role of cardiovascular disease. Flavonoids in the natural world of some plants and berries in rich content, such as ginkgo, blueberries, grapes, etc., in addition to daily life in the common soybean, black beans and other legumes in the food, flavonoids content is also relatively high. However, the flavonoid content in this type of food is not enough to prevent and treat diseases.