Mung beans, red beans and black beans all contain purines, with approximately 75mg of purines per 100g of mung beans, 53mg of purines per 100g of red beans, and 137mg of purines per 100g of black beans, which make them medium purine foods. Green beans, red beans, black beans and other legumes contain purines, as the purine content of green beans, red beans, black beans are higher than 50mg, so green beans, red beans, black beans are medium purine food, gout, hyperuricemia patients should not be excessive intake. Gout patients in the acute attack period, daily purine intake should be controlled at 100 ~ 150mg, so should not consume green beans, red beans, black beans, gout patients in the stabilization period, the daily purine intake should be controlled at 300mg, so a small amount of consumption of green beans, red beans, black beans. Those who are allergic to the corresponding foods should also not consume them.