Blackcurrant extract is an active substance extracted from blackcurrant fruit. It has rich pigment content, especially contains a large amount of anthocyanins, and has various pharmacological activities such as promoting re-synthesis of retinoid, improving circulation, anti-ulcer and anti-inflammation. Can significantly improve eye fatigue. It is also rich in unsaturated fatty acids, including linoleic acid, which has the effects of lowering blood pressure, blood lipids and anti-atherosclerosis. It also inhibits platelet aggregation, lowers serum cholesterol, increases linoleic acid synthesis and softens blood vessels. Because blackcurrant extract has many unique chemical components, it has important applications in the beverage industry and food health. It is the best raw material for brewing, extracting natural pigments and producing cosmetics and food.