The upper jaw of the breastfeeding mouth is rotten is mostly seen in the upper jaw oral ulcers, simple oral ulcers commonly used treatment methods are general treatment, physical therapy, medication and so on. 1. General treatment: eat more vegetables and fruits, add water in moderation, keep the bowels clear and the mouth moist, ensure enough sleep, avoid overwork, strengthen physical exercise, improve their immunity. 2. Physical therapy: laser irradiation can help regenerate the mucous membrane, reduce inflammation and promote ulcer healing. 3. Medication: If there is obvious pain, local medication such as epidermal growth factor gel and lidocaine gel can be used. For serious symptoms and frequent recurrence can be given vitamin C tablets, B vitamins and so on. Breastfeeding women should pay attention to oral hygiene and cleanliness, strengthen exercise, control diet and regular meals. Avoid eating hard and sharp foods such as fish bones, etc., so as not to cause damage to the mucous membrane causing mouth ulcers. When maxillary mouth ulcers occur, it is recommended that standardized treatment be carried out under the guidance of a doctor. The above medications should be used under the guidance of a doctor to avoid self-medication.