There are many reasons for yellow tongue, according to the different reasons, the use of pungent and cool relief of the surface of the drug, clearing heat and promote the production of fluids, clearing heat and dampness, as well as clearing the heat and phlegm drugs and other drugs to regulate. 1. Thin yellow tongue coating: Yin Qiao San and other medicines are often used to clear and cool the epidermis, for the treatment of external wind-heat caused by thin yellow tongue coating, in addition to headache and a slight aversion to wind and cold, as well as thirst, dry throat and cough and other symptoms. 2. Thick yellow and dry tongue coating: Commonly used drugs such as White Tiger Compound to clear heat and promote the production of fluids, used for dry heat and injury to fluids due to the thick yellow and dry tongue coating, in addition to often accompanied by high fever and dry mouth and tongue as well as irritable thirst and other symptoms. 3. Yellow tongue coating and prickly: commonly used drugs are nine system rhubarb pills and other heat-reducing drugs, used for dry heat internal knot (dry heat evil accumulation in the body) due to the yellow tongue coating and prickly, in addition to often accompanied by constipation and abdominal pain and other symptoms. 4. Yellow and greasy tongue coating: commonly used Xianglian tablets and other clearing heat and drying dampness (clearing heat and drying dampness) medicine, used for the yellow and greasy tongue coating caused by damp-heat downstream injection (dampness and heat invading the intestines, bladder, pubic area, lower limbs, etc.), in addition to diarrhea and pus and blood in stools and burning anus and other symptoms. Compound Fresh Bamboo Leak Liquid can also be used to treat yellowish tongue coating due to phlegm-heat internalization, accompanied by thick and yellowish phlegm and chest and diaphragm constriction, as well as dry pharynx. Chinese medicines or proprietary Chinese medicines should be used under the guidance of a Chinese doctor and should not be used blindly by individuals to avoid adverse consequences.