Tongue coating is a normal physiological phenomenon, if there is a pathological phenomenon of abnormal tongue color or moss, it is necessary to treat the symptoms according to the tongue coating. Under normal physiological conditions, there is tongue coating, and Chinese medicine believes that a normal person’s tongue is light red tongue, thin white moss. If the tongue is too thick, it may be a pathological condition. 1. Thick and yellowish moss on the tongue: this is mostly a manifestation of dampness-heat, and can be treated with drugs that can clear dampness-heat, such as gentian liver pill. The drug has the effect of clearing damp-heat in the liver meridian (the liver meridian feels damp-heat evil) and clearing and diarrheal solid heat in the liver meridian. Its adverse effects are not clear, but it should not be used for patients with diarrhea due to deficiency and coldness of the spleen and stomach (spleen and stomach weak and cold). 2. Thick and greasy tongue coating: This condition is mostly a manifestation of heavy dampness, so drugs with the function of strengthening the spleen and eliminating dampness (by tonifying the spleen to make the dampness discharged) can be chosen, such as Ginseng Ling Bai Zhu San. The drug has the effect of tonifying the spleen and stomach and benefiting the lungs and qi, and can be used in the treatment of weak spleen and stomach, loose food (thin and unformed feces), and fatigue (mental exhaustion and physical weakness). Its adverse reactions and contraindications are not clear. If necessary, it is recommended to go to a regular hospital for consultation and treatment under the guidance of a professional physician.