Stomatitis is mostly related to the body’s low immunity, the specific etiology is unknown, can be considered from the following aspects: 1, easy to catch a cold, poor body resistance, can be more physical exercise, improve the symptoms; 2, sleep is not good, often crying caused by the body’s plant nervous system dysfunction, caused by stomatitis; 3, the parents of the regular occurrence of oral ulcers and other oral inflammation, 80% -90% of the children also have a genetic predisposition to produce Stomatitis. Most stomatitis symptoms are mild and do not require treatment. Some children with long-term recurrent stomatitis infection can take vitamin B2, vitamin C, zinc gluconate, etc., to enhance the resistance of the oral mucosa, strengthen physical exercise, eat more fresh vegetables and fruits, and supplement the seafood with high zinc content to enhance the body’s resistance, enhance the resistance of the mucosa, and keep the mucosa intact.