According to Chinese medicine, the pathogenesis of diabetes mellitus (thirst) is based on the mainstream view of “Yin deficiency and dry heat”. During the Jin-Yuan period, Liu Heshan’s “Three Treatises on Dissipation” clearly put forward that “the disease of thirst is caused by the extreme failure of the yin energy of dampness and cold and the overabundance of the yang energy of dryness and heat”. Treatment “method should use cold medicine to nourish yin and diarrhea yang, which is also called the way of diarrhea of the real and supplement the deficiency.” Accordingly, we believe that daily life to avoid excessive consumption of those hot and thick “tonic”, such as deer (cow) whip, cinnamon, mutton, leeks, chili, white wine, etc.. 2, if the diet is not moderate is the role of external factors, then “spleen deficiency” is the internal cause of the onset of diabetes. For example, in the Nei Jing, “Su Wen – the book of strange diseases” says: “The entrance of the five tastes, hidden in the stomach, the spleen for the movement of its essence, fluid in the spleen, so that the population is also sweet. This fat and beauty of the hair also, the person must eat a number of sweet and more fat, fat people make internal heat, sweet people make the middle full, so its gas overflow, turned into thirst.” It means that over-eating sweet and fatty food hurts the spleen and stomach, and the spleen loses its health and can’t transport water and grain essence, which is the root cause of metabolic disorders. In other words, with the limited absorption function of the spleen and stomach, excessive consumption of greasy and high-calorie foods can lead to the development of diabetes. Elderly people at risk of diabetes should eat less or no fried foods, animal offal (such as liver, brain, waist, etc.), egg yolk, fish roe, dessert preserves, sweet fruits; lard, butter, cream, butter, etc. less; peanuts, walnuts, sesame seeds, melon seeds contain quite a lot of fat, try not to eat or eat less. 3, according to the theory of Chinese medicine “medicine and food”, some drugs have the role of strengthening the spleen and kidney, is also a good Chinese medicine to lower sugar, such as yam, but because it contains more carbohydrates, consumption to limit the amount. Similar foods such as potatoes, taro, lotus root and carrots are recommended to be used sparingly or to reduce the amount of staple food after consumption.