Mouth ulcers can eat watermelon, especially the fruit that nourishes Yin and reduces fire, can moisten the throat, and can clear heat and remove fire, can have a role in promoting the healing of mouth ulcers, eat more fruit, more excretion, it is possible to enhance the child’s immunity. In general, you can eat pears, watermelon, apples, bananas, ulcers painful can be cooked into fruit for the baby to eat. If it is caused by a lack of vitamin B, you can eat more eggs, animal offal or milk, and you can also eat coarse rice and noodles. It is recommended to eat more foods with high fiber to promote the absorption of vitamin B and to promote the healing of mouth ulcers. It is usually necessary to drink more water to ensure that the whole body recovers in good condition and to promote the discharge of toxins. Normally, if the mouth ulcer is heavy, you can also use drugs to coat the surface of the ulcer, such as recombinant human epidermal growth factor gel or topical solution.