Carbohydrate-containing foods mainly include cereals and potatoes, fruits, root vegetables, and protein foods such as fish, meat, eggs, milk and beans, which also contain a small amount of carbohydrates. Foods containing carbohydrates can provide energy for the body to meet the energy needs of the body’s various life activities. Foods rich in carbohydrates include grains and potatoes, fruits and root vegetables. Cereals and potatoes include rice, flour, oats, brown rice, millet, corn, wheat, buckwheat, barley, sweet potatoes, corn, etc. Fruits include pineapple, cantaloupe, bananas, papaya, grapes, etc. Root and tuber vegetables include potatoes, lotus root, yam, etc. Cereals and potatoes in the choice of food as much as possible to do with coarse and fine, so that the sense of satiety is stronger, but also more conducive to the control of blood glucose; and for the high-carbohydrate fruits, it is recommended to eat as little as possible, overconsumption of excessive energy intake, is not conducive to weight control; roots and tubers can be appropriate to eat vegetables, but when eating, to correspondingly reduce the amount of staple food. In addition, fish, meat, eggs, milk, beans and other protein foods also contain a small amount of carbohydrates, which are mainly used as the main source of high-quality protein. For diabetic patients, the intake of carbohydrates should be strictly controlled according to height, weight and daily activity level, so as not to be unfavorable for blood sugar control.