For patients with hyperglycemia, diet therapy is the basis for the treatment of diabetes. it is recommended that patients take 1/2 of carbohydrates and 1/4 each of fat and protein in each meal. carbohydrates, advocate patients to eat more coarse grains, such as corn, oats, buckwheat and various kinds of beans, including soybeans, adzuki beans and mung beans, with a daily intake of not less than 15 g. fats, limit cooking with oil to less than 10 g, stir-fry with as little oil as possible. Eat less fried food, less fatty snacks, such as melon seeds, peanuts, walnuts, etc. Protein, it is recommended to consume more high-quality protein, 100-150g of lean meat, 1 egg, 1 bag of milk and appropriate amount of soy products daily. Between meals can also be appropriate intake of pineapple, pears, cherries, prunes, lemons, strawberries and other fruits with relatively low sugar content.