Objectives Acute Bronchiolitis is an acute lower respiratory disease that the most often seen in children. The purpose of this study is to report three cases of acute Bronchiolitis children treated by oriental medicine. Methods The subjects are children diagnosed as having an acute Bronchiolitis. We treated three children with herbal medicine(Eunkyosan-gamibang) Results After treatment, the symptoms(cough, dyspnea, wheezing) of Acute Bronchiolitis were relieved. Conclusion This study shows that oriental medicine can be an effective treatment for Acute Bronchiolitis. Further study is needed with more cases of treatment.