Anthocyanin is a kind of water-soluble natural pigment widely existed in plants in nature, it is a colorful glycoside obtained by hydrolysis of anthocyanin, and its antioxidant property is strong. Nature contains anthocyanins higher food including purple potatoes, blueberries, black goji berries, purple kale and so on. In general, purple potatoes contain 60 milligrams of anthocyanins per 100 grams of purple potatoes, and blueberries contain 160 milligrams of anthocyanins per 100 grams. Black goji berries generally have higher anthocyanin content than purple potatoes and blueberries, and purple kale is also rich in anthocyanins. Anthocyanins can effectively avoid the oxidative damage of free radicals on human tissues, avoid gene aging, cell damage and regulate cellular immunity and other functions. However, anthocyanin is not a drug, no drug prevention and treatment of disease, food is also limited in the active ingredients, need to rationalize, appropriate intake. In case of discomfort, please consult a doctor.