Several mouth ulcers can be treated by general treatment, improvement of eating habits and lifestyle, and medication. Mouth ulcers are caused by not paying attention to dietary habits and living habits, lack of vitamins and other reasons. 1. General treatment: patients need to drink more warm water, and at the same time to ensure adequate sleep and rest, avoid staying up late, can be appropriate for sexual exercise to enhance physical fitness. 2. Improve dietary and living habits: usually try to avoid eating some barbecue, fried food, such as chili, instant noodles, etc., can eat more food rich in high protein and vitamins, such as eggs, milk, apples, and a variety of fresh fruits and vegetables. Smoking and drinking should be avoided as they can affect the healing of mouth ulcers. 3. medication: under the guidance of the physician to supplement vitamin C tablets and vitamin B2 tablets, you can also grind the vitamin tablets coated with mouth ulcers; can be used externally with dexamethasone acetate oral stickers or watermelon cream, etc., the above drugs can promote the healing and recovery of mouth ulcers. Patients with mouth ulcers need to go to the hospital, the physician according to the condition of the treatment and medication.