Fire mouth ulcers, that is, Chinese medicine mouth ulcers disease, need to recognize the evidence, divided into different types of choice of different drugs for treatment. 1. Wind-heat multiplying the spleen evidence: the main manifestation of mouth ulcers, mainly present in the inner lips, tongue, cheeks, palate, gums ulceration, herpes, rupture after the formation of disc disc-shaped ulcer surface, surrounded by redness and swelling, burning pain. As the pain is more intense, it can lead to not wanting to eat or talk. It can be treated with Yin Qiao San, which disperses wind and fire and clears heat and toxin (removes heat and toxin from the body). 2. Heart fire inflammation evidence: mainly manifested as mouth ulcers mainly on the tongue, tongue edge tip more, redness, swelling, burning pain, red face, red ears, irritability and insomnia, yellow urine and even burning sensation. You can choose Laxing Xin Gui Chi San for addition and subtraction to clear the form and cool the blood, diarrhea fire and detoxification (to get rid of the fire and poison in the body). 3. Spleen impotence and accumulated heat syndrome: the main manifestations are mouth ulcers, deep ulcers, yellowish-white color, different sizes, fused into pieces, or even ulcers all over the mouth, with bright red edges, pain, inability to eat normally, bad breath, drooling, dry stools, etc. The treatment can choose Liang Diaphragm Essence with additions and subtractions. It can be treated with the addition and subtraction of Liang Diaphragm San to clear away heat and detoxification (to remove heat and toxicity in the body), and to clear the stomach and diarrhea (to remove the fire in the stomach). 4.The certificate of rising fire in deficiency: manifested as mouth ulcers with few lesions, yellowish-white color on the surface, no intense pain, no redness, but with frequent attacks and prolonged healing. One can choose Six-flavored Di Huang Pill to nourish yin and reduce fire (nourishing yin essence and lowering fire), and clear the deficiency heat. If mouth ulcers occur, it is recommended to consult a doctor and follow medical advice.