There is no so-called special medicine for oral ulcers, and the medicines generally used for the treatment of oral ulcers in clinic include watermelon cream, cidadex iodine tablets, recombinant bovine alkaline growth factor gel, ice boron powder and so on. 1. Watermelon cream: the spray is more widely used, it has the effect of clearing away heat and fire, activating blood circulation and removing blood stasis, anti-inflammatory and pain relieving, etc. It can promote the growth of oral epithelial cells and accelerate the healing of ulcer wounds. 2. Cediriodine tablets: it can kill a variety of pathogenic microorganisms in the oral cavity, reduce swelling and relieve pain, and promote the healing of the oral mucosa, which has a certain therapeutic effect on oral ulcers. 3. Recombinant bovine alkaline growth factor gel: recombinant protein biological agents, can effectively promote the repair of ulcer surface, accelerate the healing of ulcer surface. 4. ice boron powder: the main ingredients are ice, borax, cinnabar, etc., can be dipped in cotton swabs to take the appropriate amount of compresses in the ulcers, mouth ulcers also have a very good effect. All of the above medications should be used under the guidance of a doctor to avoid self-medication.