Mouth ulcers are painful, round or oval ulcerated spots that appear on the mucous membranes of the lips, palate, and tongue and cheeks in the mouth. Mouth ulcers are a common oral mucosal disease, the incidence of which is currently high in China. 1. The causative cause of oral ulcers is still unclear, a variety of factors can be induced, including genetic factors, dietary factors, immune factors, etc., and has obvious individual differences. 2. In terms of treatment, mild oral ulcers are usually treated with local medication, such as local ulcer powder and recombinant bovine alkaline growth factor gel. Long-term or recurrent oral ulcers require both local and systemic treatment. Mouth ulcers are characterized by periodicity, recurrence and self-limitation, and usually heal in about 1 week. If you suffer from mouth ulcers, it is recommended to seek medical advice and use medication under the guidance of a doctor.