From the point of view of Chinese medicine, the thick white tongue moss is due to the following factors. From the point of view of Chinese medicine, this is a fire in the body, when the liver fire, lung fire and heart fire are too high, there will be fever and fever, because the fire in the upper jiao will cause the thick and white tongue moss. The reason from the perspective of western medicine is as follows: 1. Inflammatory infection after fever, the body will be infected by bacteria and viruses when fever, the oral cavity will be infected at the same time, there will be thick tongue moss, and the tongue moss will also be white. 2. fungal infection in the body will be along the oral saliva, secretory glands, etc. for the spread of infection around the tissue, there will be local fungal colonization, especially the oral cavity is particularly easy to be 3. In patients with past history such as diabetes, fever and infection will lead to white tongue with less fluid and clinical symptoms and performance due to past disease.