支气管哮喘是世界性疾病,其基本病理改变为慢性炎症,气道具有高反应性,最后导致气管阻塞,肺通气功能障碍。儿童哮喘具有反复发作的特征,往往久治不愈,严重影响人们的生活、工作和学习,甚至危及生命,给个人家庭和社会带来了沉重的精神和经济负担,成为世界各国共同关注的问题。儿 Bronchial asthma is a worldwide disease, the basic pathological changes of chronic inflammation, airway with high reactivity, and finally lead to tracheal obstruction, pulmonary ventilation dysfunction. Childhood asthma has the characteristics of recurrent episodes, often long-lasting, seriously affecting people’s lives, work and study, and even life-threatening, bringing heavy mental and financial burden to individual families and society, becoming a common concern of all countries in the world. child