Bittering tea can cure wind-heat headache, toothache and mouth sores. Bittering Tea is a evergreen tree of the species Bittering Tea of the genus Holly, family Hollyidae. It is sweet and bitter in flavor, cold in nature, and belongs to the liver, lung and stomach meridians. It has the effect of dispersing wind and clearing heat, brightening the eyes and generating fluids, and is used for the treatment of wind-heat headache, toothache, eye redness, ear infections, mouth sores, fever and thirst, diarrhea, dysentery and other diseases. Bitter tea is a cold product, easy to hurt yang qi, so the spleen and stomach cold (spleen and stomach weak cold) people should be cautious, menstruating women should not take; stomach and intestines are not good should not drink. If there is a need for medication, it should be used under the guidance of a doctor to identify the evidence, and should not be used blindly on its own to avoid adverse consequences.