Obesity is mainly due to the fact that the outside world absorbs more calories and consumes less calories, so it will get fatter and fatter. White kidney bean is a natural starch blocking food, which is rich in α -amylase inhibitor and dietary fiber. It can effectively block the decomposition of starch in high-starch foods, such as rice, noodles, steamed bread, bread, corn, cakes, biscuits, potatoes, taro, sweet potatoes, etc., block the intake of calories in starch foods, do not affect the absorption of other nutrients, and reduce the largest fat source of human body.