Traditional Chinese medicine emphasizes that the diet should be based on "five grains as nourishment, five fruits as help, no storage 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 internal organs. Confucius was a man in the Spring and Autumn Period, who died at the age of 72. It was 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: "Eating is not tired of essence, eating is not tired of delicacy, eating is timid, fish is hungry and meat is defeated, eating is bad, eating is bad, eating is bad, cooking is not good, and eating is not good from time to time." These words mean not to eat food that has gone stale for a long time, fish and other dishes that are rotten, dishes that are not beautiful in color, not delicious in taste, not paying attention to cooking, and not eating until dinner time. Warn people to pay attention to the way of keeping in good health, pay attention to food hygiene, and don't mean to eat and drink excessively. Confucius' concept of diet has a profound influence on the "diet culture" of the Chinese nation, which is the basis for the development of dietotherapy in China, and it is also a great contribution to the prosperity of the nation and the development of social economy.