Maekmoondong-Tang is prescription recorded on Zang‘s ${ulcorner}$Synopsis of the Golden Chamber${lrcorner}$ for the first time. It can be used in abnormal rising of qi, asthma, swelling throat ect. So it is observed influence of Maekmoondong-Tang on respiratory aspect of allergic asthma patient, we have significant result and report it. We used egg-white and ovalbmuin (OVA) to induce asthma in experimental animals for observe what maekmoondong-Tang have an effect on asthma. And it is observed respiratory aspect and obtained next conclusions. 1. Number of total respiration in group that is prescribed Maekmoondong-Tang slightly increased than in control group. 2. Number of abnormal respiration in group that is prescribed Maekmoondong-Tang decreased than in control group significantly.