Mouth ulcers generally have no fruit that can not be eaten, patients can eat more fresh fruits rich in vitamins to promote recovery. 1. Mouth ulcers are ulcerative injuries that occur locally in the oral mucosa, and the etiology is related to genetic, immune, mental, and dietary factors. If long-term partiality, it will lead to unbalanced intake of vitamins, minerals and other nutrients in the human body, thus causing mouth ulcers. 2. Canker ulcer patients need to pay attention to diet, eat less spicy and stimulating food. But there is not much restriction on fruits, while eating more fruits can also promote recovery, patients can choose to eat strawberries, bananas, watermelon, mango and other fruits according to personal taste, supplement the intake of vitamins. For patients suffering from mouth ulcers, they should cooperate with doctors to standardize treatment. During the treatment also pay attention to the diet, eat less spicy stimulating food, to avoid stimulating the local, causing pain and discomfort.