Mouth ulcers are caused by bacterial infection in the mouth, or lack of vitamins and certain substances needed by the human body to cause local inflammatory changes in the mouth. Treatment of adult amount of oral amoxicillin tablets, vitamin B2 tablets, vitamin C tablets 2 tablets each, 3 times a day, serving 5 days. Avoid spicy and hot foods such as chili peppers and ginger. When taking vitamin B2, the color of urine is dark yellow, which does not affect the body and is normal. Chinese medicine: heart fire and see mouth ulcers red, swollen and painful, heartburn, dry mouth want to drink, ulcers red constipation, urinary frequency and urgency with stabbing pain, tongue tip red moss yellow with: wood Tong 10 grams, gentian grass 10 grams, 15 grams of branches, 20 grams of the raw land, slippery stone 30 grams, Qu Mai 10 grams, Ophiopogon 15 grams, Lanxin 10 grams, Zeloda 15 grams, licorice 5 grams; Yin deficiency fire symptoms see mouth ulcers slightly painful, dry mouth and tongue want to drink, body slimming, and the usual hot and spicy food such as chili. Disturbed sleep, usually dry stools, tongue thin tongue tip red less moss or no moss with: cypress 10 grams, 15 grams of raw land, mother 10 grams, 15 grams of diarrhea, 15 grams of Huaishan, dandelion 12 grams, Poria 15 grams, cornelian cherry 10 grams, ripened land 15 grams, maitake 10 grams, licorice 5 grams, decoction served;. You can also take Wang Lao Ji punch, Xia Sang Ju punch, Ban Lan Gen punch. The ulcer surface can be used ice boron powder, iodine glycerin coating, or iodine cauterization. If the pain is severe, you can take 1 oral craniotonidine tablet or 1 painkiller tablet, which has the effect of relieving pain. Usual precautions: 1. Avoid eating spicy, hot, fried, stir-fried hot products. Such as chili peppers, ginger, deep-fried doughnuts, cookies, cookies, fast-food noodles, mutton and so on. 2. Don't be partial to food, diversify your diet. Eat more vegetables and fruits that contain more vitamins. For example, fruits, spinach, carrots, and so on. 3. Cheerful mood, do not always think of things that make people worry, more and friends to play, happy every day. 4. Live and work in moderation, pay attention to rest, and do not surf the Internet all night long. 5. Hot, dry climate, fresh Luo Han Guo can be used as a tea to drink, or with maitake, chrysanthemum, licorice and other ingredients to brew water to drink. 6, pay attention to oral hygiene.