Diabetes mellitus is a disease caused by the interaction of genetic and environmental factors, etc. The clinical manifestation is marked by elevated blood glucose. The common symptoms are fatigue, thirst, excessive drinking, easy hunger, increased small edits, and body wasting. This is a metabolic disease, and long-term metabolic disorders can lead to chronic lesions, functional decompensation and even failure of tissues and organs such as eyes, kidneys, nerves, heart and blood vessels. In the TCM system, it belongs to the category of “thirst”. According to TCM, the main causes and categories of diabetes are as follows: 1, congenital deficiency – genetic factors: the body from the mother’s body out of the heart of the day deficiency, Yin deficiency body is most likely to suffer from diabetes. 2, emotional disorders – dry heat injury to the lungs: long-term mental stimulation, resulting in liver emotional damage, the formation of liver qi stagnation, depression and anger injury to the liver, excessive thinking, so that the depression for a long time into fire upward, burning the lung and stomach yin and fluid. It usually manifests as irritation and thirst, dry mouth and throat, easy to eat and hunger, excessive urination and dry stools. 3, diet disorder – stomach dryness and fluid injury: long-term consumption of heavy diet, wine, spicy stimulation, damage to the spleen and stomach, resulting in dysfunction of the spleen and stomach transport. Usually manifested as easy hunger, constipation, dry mouth and want to drink water, the body is thin. 4, excessive sexual desire – kidney yin loss: excessive sexual desire leads to kidney essence loss, the formation of kidney yin deficiency fire, injury to liquid burning fluid, and eventually kidney deficiency, lung dryness and stomach heat are present, the development of thirst. The symptoms usually include frequent urination, cloudy and greasy color like grease, dizziness, tinnitus, blurred eyes, dry mouth and lips, insomnia and distraction. The symptom of thirst is a deficiency of yin and fluid, and a prevalence of dryness and heat. The internal organs affected by diabetes are mainly the lungs, stomach and kidneys, with the kidneys being the most important. Therefore, to relieve the disease of diabetic patients, we should nourish the vital energy, regulate the qi and blood, and clear the dryness and moisten the lung.