Dexamethasone acetate oral patch is mainly used for the treatment of mouth ulcers. Firstly, it can protect the ulcer surface and form a protective layer so that the bacteria in the mouth will not easily invade. At the same time, it belongs to the adrenal glucocorticoid, has a good anti-inflammatory effect, can promote mucosal proliferation, help local tissue repair, clinically used in the treatment of oral ulcers more satisfactory effect. When using the drug, you also need to pay attention to oral hygiene, brush your teeth and rinse your mouth regularly, avoid eating spicy and stimulating food, and do not drink alcohol.