White kidney beans is a kind of bean food, containing calcium, phosphorus, iron, protein, fat, dietary fiber, carbohydrates and other nutrients. Usually white kidney beans have a certain weight loss effect, reduce obesity most of the diet is not in moderation, not exercise, etc., resulting in calorie intake is greater than consumption, and excess calories into fat, and white kidney beans in the α-amylase inhibitor helps to block carbohydrates, to a certain extent to reduce body weight. But white kidney beans belong to the food, weight loss effect is limited, it is recommended to rationalize the diet, eat more calories lower food, appropriate to participate in physical exercise.