Black soya bean red pigment is a natural pigment extracted from black soybean hull. The main component is cyanidin 3-0-galactoside, which has become a black bean anthocyanin. It has been used in wine and nutrient vinegar. Black bean red pigment is not only a coloring agent, but also has the effects of improving capillary microcirculation, scavenging free radicals, anti-aging, etc., and has good development prospects.