支气管哮喘(简称哮喘)是最常见的慢性气道炎症性疾病。据不完全统计,全世界约有1亿以上的哮喘患者,很多发达国家哮喘发病率超过10%。在我国哮喘的发病率成人约为1%,1990年全国调查儿童哮喘的发病率为0.91%,2000年上升到1.5%。哮喘是致使成年人生活质量下降及青少年缺课的主要疾 Bronchial asthma (asthma) is the most common chronic airway inflammatory disease. According to incomplete statistics, there are more than 100 million asthmatic patients in the world, and the incidence of asthma in many developed countries exceeds 10%. The incidence of asthma in our country is about 1% of the adults in our country. In 1990, the incidence of childhood asthma in the nationwide survey was 0.91% and increased to 1.5% in 2000. Asthma is a major disorder that leads to a decline in the quality of life of adults and the absence of teenagers