Stomatitis is a disease that children are very susceptible to nowadays. Many parents think that stomatitis is caused by fire, but in fact most stomatitis in children is malnutrition stomatitis, which is triggered by nutritional deficiencies, among which stomatitis caused by vitamin B deficiency is the most common. The symptoms of corns of the mouth in children are initially red and itchy, then the epithelium falls off, forming erosion, impregnation or cracks, pulling apart and bleeding easily when opening the mouth, and eating and talking are affected. After the child’s lips are dry, he likes to use his tongue to lick it, in order to make the lips and the corner of the mouth moist, so that he can get a momentary sense of comfort. But because the saliva encountered dry air quickly evaporated, so not only can not solve the problem of dryness, but on the contrary, the microorganisms in the saliva brought to the fissure, will cause bacterial infection, aggravating the inflammation of the corner of the mouth. Currently, there are more children suffering from keratitis, and in the face of the current high incidence of keratitis season, the necessary measures should be taken to actively prevent it. What should I do if my child has stomatitis? 1, is to strengthen nutrition, pay attention to dietary balance, not partial food, not picky, eat more food rich in B vitamins, such as animal liver, lean meat, poultry eggs, milk, soybean products, carrots, fresh green leafy vegetables, etc., because B vitamins are easily dissolved in water. When cooking, pay attention to prevent vitamin loss, rice should not be overly panned, vegetables should be washed first and then cut, cut as soon as possible after the pan, stir-fry vegetables can add some vinegar. 2, is to protect the facial skin, keep the mouth and lips clean and hygienic, pay attention to clean mouth and lips after eating. When the mouth and lips are dry, you may want to apply a little glycerin, ointment to prevent dryness and cracking from occurring. Pay attention not to lick the mouth and lips with your tongue, if you use your tongue to lick, amylase and lysozyme in saliva remain at the corners of the mouth, forming a kind of hyperosmotic environment, which will lead to more and more local dryness and thus erosion.