Oral ulcers on the palate can be treated by applying stannous dispersion, stomatitis spray, watermelon cream spray, or mouth ulcer patches to promote healing of ulcers on the palate, or by applying lidocaine gel to relieve the pain caused by ulcers. Patients with ulcers on the palate of the mouth are mostly caused by a lack of vitamins and trace elements in the body. They can take vitamin C, vitamin E, vitamin B, zinc gluconate oral solution or iron supplement preparations accordingly. Avoid spicy and irritating food, food with too high temperature and food with too hard texture in the diet, and focus on a light, warm and soft diet. At the same time, drink more water and take medicines to clear heat and lower fire, such as clear fire gardenia wheat tablets and niuhuang Shangqing pill, which can prevent the recurrence of ulcers.