Carbohydrate food is divided into four main categories: 1, cereals: mainly from grain, including rice, flour and coarse grains. For example, buckwheat, oats, brown rice, corn, etc.; 2, potatoes: mainly sweet potatoes, sweet potatoes, taro, yams, potatoes, etc.; 3, vegetables: of which lilies, roots contain more carbohydrates; 4, dairy products: dairy products also contain a certain amount of carbohydrates inside. Carbohydrates are a large class of compounds composed of three elements: carbon, hydrogen and oxygen. Carbohydrate food can provide energy for the body to meet the physiological needs of the body. Carbohydrates are the main source of blood sugar production and the most important source of energy intake for our body. Glucose, sucrose, starch and fiber, etc., are all carbohydrates.