Mouth ulcers local application of iodine glycerin or dexamethasone acetate paste tablets to relieve pain, can also be oral transfer factor to promote ulcer healing. 1. Mouth ulcers are a manifestation of systemic diseases in the mouth, caused by low immunity. When the ulcer attack localized pain is obvious, you can use iodine glycerin to apply the affected area, or use dexamethasone acetate paste tablets to relieve pain. 2. You can also use transfer factors to improve your immunity and prolong the duration of the ulcer attack, while paying attention to strengthening physical exercise and regular light diet. If the traumatic mouth ulcers are caused by irritating factors such as crowns and roots of teeth, the irritating factors need to be removed. So oral ulcers can be localized use of iodine glycerin or dexamethasone paste tablets, or oral transfer factor to improve their own immunity, more than two weeks do not heal the ulcers need to consult a doctor in a timely manner, the use of drugs need to comply with the doctor’s instructions.