Stomatitis, also known as rotten mouth, is an inflammation of the upper and lower lip union. Treatment guidelines, etiological treatment: give vitamin B complex, local cleaning care medication, local application of antifungal drugs, and broad-spectrum antibiotics if necessary. Drug treatment: I. Malnutrition keratitis, generally give vitamin B2, while oral vitamin B complex, strengthen local care, the corner of the mouth local available gentian violet coating, maintain cleanliness and hygiene. Second, coccidiostomatitis. Treatment should be applied with antibiotics, such as erythromycin ointment, after local cleaning. At the same time, broad-spectrum antibiotics can be taken orally, such as penicillin synthetic sulfonamides, spiramycin, etc. Fungal stomatitis, treatment should be localized with mycoplasma liquid cleaning and drying, local application of mycoplasma 2%-4% concentration, sodium bicarbonate solution. Daily care to protect the facial skin, keep the mouth and lips clean and hygienic, pay attention to clean mouth and lips after eating, do not lick with the tongue, if the tongue lick the corners of the mouth, saliva amylase, lysozyme, etc. in the corners of the mouth residue, forming a kind of hyperosmotic environment, resulting in local more and more dry, thus erosion occurs.