Objectives: In order to evaluate the effect of jungcheonwhadamgangki-tang on Balb/c mouse of allergy-sensitive to bronchial asthma induced by ovalbumin. Methods: The changes of diameter lumen of trachea which was upper respiratory organ, weight and gross appearance of lung, histology of lung and trachea, numbers of inflammatory cells in the bronchoalveolar lavage fluld(BALF) were observed. Results : The results are obtained as follows. 1. The diameters of trachea lumen were significantly increased in Jungcheonwhadam gangki-tang treated group as compared with control group. 2. Inflammatory cells including neutrophil and eosinophil in BALF were significantly. in Jungcheonwhadamgangki-tang treated group as compared with control group. 3. Weight of lung and black spots, which resulted from infiltration of inflammatory were significantly decreased in Jungcheonwhadamgangki-tang treated group as compared with control group.4. Hypertrophy of mucous membrane of trachea and bronchus and bronchioles in the lung, peritracheal, peribronchus and peribronchiolar inflammatory cell infiltration, and mucoid exudate deposit in the lumen were significantly decreased in Jungcheonwhadamgangki-tang treated group as compared with control group. Conclusions : It is considered that Jungcheonwhadamgangki-tang has somewhat favorable effect on the bronchial asthma because the bronchial asthma specific series of abnormalities in respiratory system were decreased after oral administration of Jungcheonwhadamgangki-tang in this study. In future, it is needed that the toxicological and dosage specific study of Jungcheonwhadamgangki-tang to use against bronchial asthma with safe.