Diet is the material basis for nourishing the organism, maintaining life and ensuring growth and development. Traditional Chinese medicine has always attached importance to dietary care, and it has been said that “medicine is better than food therapy”. The diet is a reasonable combination of food under the guidance of the theory of Chinese medicine, the use of Chinese medicine diet diagnosis and treatment, according to the nature of the taste of the diet to identify and harmonize, so that each of the five organs to get its taste to help maintain and restore its normal function. According to the theory of Chinese medicine, any disease is the result of imbalance of yin and yang. The correct choice of diet is based on the eight principles of identification of the disease and the principles of deficiency as a tonic, solid as a diarrhea, cold as a heat, and hot as a cold. According to the needs of TCM diet, food is divided into the following categories according to its nature and odor: spicy, sweet, oily, fatty, hairy, tonic and cold. The three principles of dietary conditioning are first, nutritional support. Chinese medicine has the saying of “supplementing the organs with the organs”, such as eating the heart to supplement the heart, eating the liver to supplement the liver, etc., which can be used as a reference to regulate the patient’s diet. As far as the patient’s condition allows, nutrition should be provided through diet to ensure the needs of human body functions. For ordinary patients, a diet of light and nutritious liquid or semi-liquid food is appropriate. For some chronic weaknesses, it is recommended to provide meat or dairy products. Second, avoid partial diet. Food has the nature of cold, hot, warm and cool and the five flavors of pungent, sweet, sour, bitter and salty, and the five flavors can enter the five organs. The ancients say: “acid hurts beard, bitter hurts gas, sweet hurts meat, pungent hurts skin and hair, salty hurts blood.” Therefore, a reasonable diet to make the five organs each get their taste, in order to achieve the coordinated operation of the internal organs and tissue organ function. Third, the diet has a section. Diet is a regular diet, regular ration, not too hungry and too full. Because of the diet is not controlled, overeating, most likely to damage the spleen and stomach.