Mouth ulcers can be moderately consumed vitamin C-rich fruits, such as kiwis, oranges and apples. 1. Certain ingredients in vitamin C-rich fruits may have the effect of relieving the symptoms of mouth ulcers, but the effective dose ingested in daily consumption is limited and cannot achieve the effect of treating mouth ulcers. It is recommended to consume in moderation, while paying attention to a light diet and balanced nutrition. 2. If you want to treat mouth ulcers, it is recommended to carry out regular treatment with the help of a doctor. At present, the commonly used treatment method is local medication symptomatic treatment, such as oral ulcer powder, recombinant bovine alkaline growth factor. If the symptoms of mouth ulcers are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, to identify the cause of the targeted treatment, the use of drugs need to follow the doctor’s instructions.