The main clinical solutions for mouth ulcers are general treatment, medication, and topical closure. Mild oral ulcers use general treatment, severe oral ulcers can use local treatment, and the rest are mainly treated by drugs. 1. General treatment: mainly to maintain oral hygiene, prevent secondary infection, pay attention to anti-inflammatory pain relief, effectively promote the healing of ulcers. 2. medication: oral ulcer patients mainly use pain medication and gargle, in the pain can use lidocaine, generally not recommended for a long time. In addition, you can choose to have an anti-inflammatory effect of the compound chlorhexidine liquid, chlorhexidine gargle. 3. Local closed treatment: for a long time does not heal or have obvious pain in the serious ulcers, you can choose to close the injection in the submucosa, the use of dexamethasone combined with tretinoin, can be achieved to promote healing, play the effect of pain relief. There are many solutions to oral ulcers, generally oral ulcers are benign, rarely malignant, but if the ulcers recur in the same location, there is a possibility of malignant changes, it is recommended to go to the regular hospital in time for treatment. The medication should be in accordance with the doctor’s instructions.