1, spicy food is sensitive food for many people, they can irritate the oral mucosa, and sometimes damage the oral mucosa and induce the. Tobacco, alcohol, fried food will stimulate the oral mucosa, aggravate the mouth ulcer, is the mouth ulcer diet should be contraindicated. 2, vegetables and fruits are beneficial to the body, vegetables and fruits contain vitamins, vitamins are important components of the composition of the mucosa, so the diet of mouth ulcers vegetables and fruits is essential. 3, dietary balance is the key to maintaining a healthy body, our body needs many substances missing, fine grains and coarse grains should be reasonably matched, the diet of mouth ulcers to eat more mixed grains. Green leafy vegetables, fruits, potatoes, soy products, milk, etc. to achieve dietary balance, but also to do not picky food not partial food. 4, the diet of mouth ulcers to drink more yogurt.