Studies have shown that whole grains can nourish the five internal organs. As the saying goes, "one grain supplements one dirty", and whole grains can raise five internal organs. Cereals include millet, rice, wheat, soybeans and sorghum. Among them, millet can tonify spleen, soybean can tonify kidney and so on. Chinese medicine believes that whole grains can not only fill the stomach, but also be good food for the five internal organs. Apart from rice flour, whole grains are the best cereal food and the cheapest energy source, and they retain more nutrients than rice flour. Grain is the foundation of the dietary pagoda, and whole grain is the best basic food and the cheapest energy source. Adults consume 250~400 grams of grain every day, which is beneficial to prevent the occurrence of related chronic diseases. For all kinds of whole grains, everyone has his own best way to eat, in order to give full play to its nutritional efficacy.