The role of black beans is as follows: 1, can dispel wind and detoxification, for wind poison, wind rash, wind paralysis, tendon contracture, carbuncle, sores and poison, if appropriate consumption of black beans has a good wind and detoxification effect. 2, can promote blood and water, for edema and swelling, jaundice swelling, short urine red, if appropriate consumption of black beans has a good blood and water effect. 3, can strengthen the spleen and benefit the kidney, for spleen deficiency caused by loss of appetite, indigestion The black beans are good for the spleen and kidneys, for people with weakness of the waist and knees, and for people with back and leg pain caused by kidney deficiency.