The first kind of carbohydrate-containing foods are commonly eaten cereals, such as rice, millet, oats, buckwheat, corn, etc. These foods are often rich in carbohydrates. The second kind of food is potato food, such as sweet potato, sweet potato, potato, taro and so on. These potato foods contain a lot of carbohydrates. The third kind of food is often eaten fruits, such as apples, peaches, bananas, pears and so on. These sweet fruits also contain a lot of carbohydrates, which provide the body with very rich sugar.