Eating starchy food will not make you fat, but eating too much starchy food will definitely make you fat. Starch belongs to the polysaccharide of sugar, polysaccharide will be converted into glucose after digestion, and glucose is the main energy supplying substance of living organisms. Therefore, a certain amount of starchy food intake is an important material basis for maintaining the normal life activities of the human body. If too much starchy food is eaten, more calories than the body needs will be converted into fat reserves in various parts of the body, resulting in human obesity. Therefore, the intake of starchy food should pay attention to the following points in order to avoid fat: 1, control the total daily intake, healthy adults need at least 200-300g of starchy food per day. It is not advisable to replace starchy foods with vegetables, fruits and meat. 2. cooking methods, cooking methods will affect the heat of starchy foods, should minimize the intake of sugar, fat and salt. Avoid frying, deep-frying, baking way to process starchy foods. 3, advocate eating mixed grains, you can add corn, oats, buckwheat, sorghum and other mixed grains, can provide rich nutrition, but also to increase the intake of dietary fiber.