"Medicine and food are homologous" means that many foods are medicines, and there is no absolute dividing line between them. Ancient doctors applied the theory of "four natures" and "five flavors" of traditional Chinese medicine to food, and thought that every food also had "four natures" and "five flavors". "homology of medicine and food" means that Chinese medicine and food originated at the same time. Eating/drinking foods with the same origin of medicine and food in daily life is dietotherapy.

Chinese yam, jujube, red bean, ginger, black bean, medlar, coix seed, black sesame, mulberry, longan, etc.

Some common herbal teas and scented teas belong to the homology of medicine and food. At present, the products that belong to the homology of medicine and food are: Cui Rong medicine and food homology Kugen decoction, Bazhen decoction, Chen Xiao decoction, Maren decoction, orange stalk decoction, Frye decoction, Pueraria lobata decoction, Jade Buddha decoction and so on.