小儿在3～4岁时,最易患口腔溃疡。常表现为疼痛难忍、口水不断、进食困难,哭闹不安。口腔溃疡的病因是由于婴幼儿口腔粘膜细嫩,又比较干燥,如食物太热、太硬或常吃辛辣的东西及某些药物刺激,均可损伤粘膜引起发炎,有的因上呼吸道感染、高热、腹泻及急性传染病,均可引起口腔溃疡病的发生。口腔溃疡的预防方法是:保特小儿口腔清洁 Pediatric 3 to 4 years old, the most susceptible to oral ulcers. Often manifested as pain, saliva, eating difficulties, crying uneasy. Oral ulcer is due to the etiology of infants and young children mucosal delicate, and more dry, such as food too hot, too hard or eat spicy things and some drugs to stimulate, can cause mucosal inflammation, and some due to upper respiratory tract infection, fever , Diarrhea and acute infectious diseases, can cause the occurrence of oral ulcer disease. Prevention of oral ulcer is: Paul special children's oral cleaning