Object : Dyspnea is a one of the common symptom in pulmonary disease. Jungchunghwadam-tang was used to treat chronic pulmonary disease patients with dyspnea. Thus in this study we evaluate the effect of Jungchunghwadam-tang on dyspnea. Methods : In this study, ten chronic pulmonary disease patients were treated with Jungchunghwadam-tang. Peak expiratory flow were obtained by peak flow meter. Result : After the treatment, peak expiratory flow was increased significantly compared with before treatment. Percentage of predict peak expiratory flow was also increased significantly compared with before treatment. Conclusion : The result of this study demonstrate that Jungchunghwadam-tang taken for dyspnea on chronic pulmonary disease are effective. Further investigation in well designed follow up study is needed.