There are many staple foods, which can be divided into cereals and potatoes, such as rice, wheat, corn, purple potatoes and so on. 1. Cereals (including whole grains and miscellaneous beans): According to the dietary recommendations in the dietary pagoda, normal people eat 200 to 300g of cereals per day is better, such as wheat, barley, oats, rye, cereals mainly contain starch, accounting for about 70 to 80%, protein content is generally 7.5% to 15%. Which is appropriate to eat 50~150g of whole grains and mixed beans per day, common soybeans, fava beans, peas, mung beans, oats, black rice, etc., the main nutrients include carbohydrates, proteins and fats, etc., rich in dietary fiber. 2. Potatoes: normal people should consume 50 to 100g of potatoes per day, such as sweet potatoes or white potatoes, potatoes, yams, etc., is also one of the sources of human energy. Staple food refers to the main food on the table traditionally, and is also the main source of starch as well as minerals that people get in their daily diet. Each person should consume a certain amount of staple foods every day to ensure the intake of carbohydrates. If you want to lose weight, you can appropriately reduce the intake of staple foods, but you can not stop eating staple foods. It is recommended to pay attention to the daily diet to ensure a balanced diet, to avoid too single diet.