Oral ulcers can be treated with local anti-inflammatory drugs to achieve anti-inflammatory, prevent secondary infection, promote healing and other purposes, including gentamicin betamethasone paste, compound gentamicin film and so on. 1.Chrysomycin betamethasone paste: it contains chrysomycin hydrochloride, betamethasone, etc. It has antibacterial, anti-inflammatory and infection control effects. Oral candida infection, oral tuberculosis is prohibited. 2. Compound Gentamicin Film: containing gentamicin sulfate, butacaine hydrochloride, dexamethasone acetate, etc., with antibacterial, anti-inflammatory and analgesic effects. Oral candida infection is prohibited. All of the above medicines should be used under doctor’s guidance, and it is recommended to visit regular medical institutions to receive professional treatment.