Western medicine diabetes belongs to the category of Chinese medicine “thirst”, the pathogenesis of thirst for the loss of yin and fluid, dryness and heat, i.e., yin deficiency is the main, may be accompanied by the situation of yang deficiency. Thirst can be categorized as upper, middle and lower consumptions, upper consumptions that is, lung heat and fluid injury (lungs in the heat evil, continue to deplete the body fluid); middle consumptions can be categorized as gastric heat and qi and yin deficiency; lower consumptions can be categorized as kidney yin and yin and yang deficiencies. Thirst-quenching disease is characterized by yin deficiency, with dryness and heat as the symptoms. Generally, at the beginning of the disease is mainly dry heat, the longer the course of the disease, the yin deficiency and dry heat, the longer it is mainly yin deficiency, due to yin and yang mutual root, the course of the disease for a long time, yin damage and Yang, resulting in yin and Yang are both deficient. It is recommended that after diagnosis of diabetes mellitus, pay attention to diet, strengthen exercise, active treatment, if you want to seek Chinese medicine treatment should go to the formal institutions.