If the tongue is yellow, it is considered to be caused by pathological factors, excluding the yellowing of the tongue due to the consumption of certain food containing pigments. According to Chinese medicine, yellow moss is mainly used for internal evidence and heat evidence, and according to the degree of yellow moss, there are slightly yellow, deep yellow and burnt yellow, the darker the color, the heavier the heat. According to the shape of the moss, there are also different thickness, moist and dry, putrid, so its main disease, mainly seen in the following: 1, the real heat: evil heat into the body, fumigation of the stomach and internal organs, and dry stool in the intestines, knotted in the intestines, manifested as yellow and dry tongue moss, deep yellow and thick, severe cases can be seen in the mango, scorching, red face, generalized fever, thirst, sweating, constipation or diarrhea, abdominal fullness, pain and refusal to press, irritable delirium, pulse The damp-heat is contained in the tongue, which is manifested as yellow and sticky tongue coating or dirt, and red tongue texture. The treatment is to clear heat and resolve dampness, or choose Chinese herbal medicine such as Baicalin Slippery Stone Tang under the doctor’s diagnosis.