Often oral ulcers are not yet a cure for the special effect method, symptomatic treatment, supplemented by causative treatment, as follows. 1. Symptomatic treatment: to reduce pain, promote healing for the purpose of the current commonly used drugs for glucocorticoids, such as tretinoin oral paste, dexamethasone ointment, prednisolone ointment, betamethasone gargle, hydrocortisone adhesion tablets and so on. 2. Treatment of causes: for ulcers caused by trauma, traumatic factors should be removed, such as sharp edges of residual crowns, bad restorations, etc.; for ulcers caused by psychological factors, psychological treatment should be received to eliminate tension and anxiety. It is recommended to go to the hospital to receive professional and regular treatment. All of the above medications should be used under the guidance of a doctor, avoid self-medication.