White tongue coating and teeth marks are due to the body’s spleen deficiency and dampness. White tongue coating refers to the white color of the moss and dirt attached to the tongue surface; tongue with teeth marks refers to the traces of teeth that can be seen on the edge of the tongue, also known as tongue with teeth marks. The spleen is the master of transportation (the spleen has the function of digesting food, absorbing food essence and water and transferring it to the whole body), if the spleen is deficient due to dietary irregularities or emotional disorders or excessive work and rest, the water transfer and transportation will be out of order, and dampness will accumulate on the tongue, which will then appear as a white tongue coating with teeth marks. The treatment is to strengthen the spleen and dissolve dampness. According to the diagnosis, it can be treated with Pinggou San and other treatments. If there is any discomfort, it is recommended to actively go to the regular hospital, under the guidance of a professional physician standardized treatment, not self-medication, so as not to cause damage to the body.