The ancient doctors in China had a lot to say about dietotherapy. Sun Simiao once said: "A husband is a doctor, he must know the source of the disease, know what he has committed, treat it with food, and then prescribe medicine." This is an extremely rich and valuable experience accumulated by our ancestors in the long-term struggle against diseases and the pursuit of health and longevity.

Traditional Chinese medicine (TCM) has always believed that medicine and food are of the same origin, and they are listed as top-grade drugs in Shennong Herbal Classic, the earliest pharmaceutical monograph in China, and most of them are daily foods. There is no absolute boundary between food and medicine, but generally speaking, food tastes mild. Such as rice, wheat, red dates, yam, dried ginger, fennel, pepper, fungus, almond, lily, walnut, lotus seed, honey, sesame oil, watermelon, garlic and so on. They are all foods that we often eat, and they are all commonly used Chinese medicines.

Diet therapy, or food therapy, is attracting more and more people's interest. Food can provide people with all kinds of necessary nutrition, strengthen the body and prevent diseases; After getting sick, it is possible to cooperate with the treatment; After the disease is cured, it has the function of assisting rehabilitation. Paying attention to diet is beneficial to health, disease prevention and rehabilitation.