Obese people should control non-staple food and avoid pure sugar and sweets, such as potatoes, malt extract, jam, candy, honey and juice. Carbohydrate is easy to digest, not hungry and hydrophilic, which is not conducive to rapid weight loss. In the process of losing weight, we should also properly control the amount of staple food. If the original food intake is large, you can use the decreasing method to gradually control the staple food at around 250 to 300 grams, and you can only eat 70% to 80% full, and chew slowly.