Cough is not only serves to maintain normal function of respiratory tract, but also many diseases may lead to this symptom. In Korean medicine, Zhudanxi(朱丹溪), was the first to classify cough according to the different stages of time. In this research, I investigated the stage of Nocturnal Cough(夜嗽) through 26 oriental medical books. As a result, deficiency of Yin(陰虛) was the most common causes of Nocturnal Cough and indigestion(食積) is the next. Liuweidihuang-tang(六味地黃湯) prescribed as the treatment for Yin Xu(陰虛) and Xeibaisan-jiawei(瀉白散加味) prescribed as the treatment for indigestion(食積).