The inflammation and swelling of the inner wall of the mouth may be caused by oral ulcers, which are usually treated by local medication, such as glucocorticoid drugs, anti-inflammatory drugs, and drugs to promote healing. 1. Glucocorticoid drugs: such as topical application of trimethoprim oral paste, dexamethasone ointment, and so on. 2. Anti-inflammatory drugs: such as containing the iodine tablets, mycobacteria tablets, gargling chlorhexidine solution, polyvinyl ketone iodine solution, compound borax solution, and so on. 3. Promote healing drugs: such as local rubbing recombinant human epidermal growth factor gel, rehabilitation of new liquid. All of the above drugs should be used under the guidance of a doctor, and it is recommended to go to a regular medical institution to receive professional treatment.