The so-called diet health, Chinese medicine believes that a reasonable diet can regulate essence, correct the deviation of yin and yang of viscera, prevent diseases and prolong life.

Traditional Chinese medicine emphasizes that the diet should be based on "five grains as nourishment, five fruits as help, no hidden food as benefit, and five dishes as filling", and it should also pay attention to the harmony of five flavors, otherwise it will cause diseases due to unbalanced nutrition, biased constitution and dysfunction of viscera. Confucius was born in the Spring and Autumn Period at the age of 72. It is rare to live to be over 70 years old more than 2,000 years ago. Confucius' longevity is inseparable from his diet. It is recorded in The Analects of Confucius: "Food is not tired of essence, food is not tired of essence, food is not afraid, fish is hungry, food is inedible, food is inedible, food is inedible, cooking is inedible, and food is inedible." These words mean not to eat food that has gone bad for a long time, fish and other rotten dishes, dishes that are not beautiful in color and taste bad, do not pay attention to cooking, and do not eat until dinner time. Warn people to pay attention to the way of health preservation, pay attention to food hygiene, and don't be stingy with excessive eating and drinking. Confucius' concept of diet has a far-reaching influence on the "diet culture" of the Chinese nation, which is the basis of the development of dietotherapy in China and a great contribution to the prosperity of the nation and social and economic development.