目的　观察布地奈德 (budesonide,普米克令舒 )吸入疗法对减少毛细支气管炎后哮喘发病率的作用。方法　分组观察毛细支气管炎的患儿临床缓解后吸入和不吸入普米克令舒雾化液后 2年哮喘的发病率。结果　吸入组患儿发病率 14 .0 % ,对照组发病率为 33.3% ,二者有显著性差异 (P <0 .0 5 )。结论　在毛细支气管炎缓解后吸入普米克令舒可明显降低哮喘的发病率。 Objective To investigate the effect of budesonide (pulmicort) inhalation therapy on reducing the incidence of asthma after bronchiolitis. Methods The incidence of asthma in children with bronchiolitis after 2 months of clinical remission and without inhalation of pulmicort respules was observed. Results The incidence rate of infants was 14.0% in the inhalation group and 33.3% in the control group, with significant difference (P <0.05). Conclusions Pulmicort respules after inhalation of bronchiolitis can significantly reduce the incidence of asthma.