The staple food suitable for patients with high blood sugar should be a combination of coarse and fine, not just one kind of food. Hyperglycemia patients should reasonably control the caloric intake of each meal every day, according to their own body weight to be more careful to increase or decrease the energy intake. The daily energy intake, carbohydrates provide calories to account for 50% to 60% of the total calories, that is to say, an adult patient with high blood sugar daily staple food intake of 250 to 400g, rather than a large part of the understanding of the people do not eat staple food. Secondly, the staple food does not only include refined rice, white flour and its products, staple food and coarse grains, coarse grains include cereals, beans, potatoes. The grains are sorghum, millet, brown rice, oats, etc.; legumes include red beans, black beans, green beans, etc.; potatoes include sweet potatoes, purple potatoes, yams, etc.. Grains are rich in dietary fiber and vitamins, and these components help delay the rise in blood sugar after meals. And beans can provide a large amount of protein in addition to calories. In short, the diet of high blood sugar patients should not focus on one kind, but a variety of foods with a variety of combinations, flexible changes, while listening to the doctor’s advice.