支气管哮喘是世界范围内严重威胁公众健康的主要慢性疾病之一，近１０多年来许多国家哮喘的患病率及病死率都有上升的趋势，我国五大城市１９９５年对１３～１４岁学生的调查显示，哮喘的患病率为３３％～５１％。因此，哮喘发病机制及诊治方法一直是研究的热点。本文... Bronchial asthma is one of the major chronic diseases that seriously threaten public health in the world. In recent 10 years, the prevalence of asthma and mortality in many countries have risen. The survey on students aged 13 to 14 in five major cities of our country in 1995 Show, the prevalence of asthma was 3  3% ~ 5  1%. Therefore, the pathogenesis of asthma and diagnosis and treatment methods has always been the focus of research. This article...