Abstract: OBJECTIVE To explore the prescription regularity of treatment for cough of Cao cangzhou， an imperial physician in Qing Dynasty. METHODS A total of 157 cough cases in Cao cangzhou were included in the study. Spss moderler 14.1 was used for correlation analysis and frequency statistics. Viscera syndrome differentiation of 110 medical records was also carried out. RESULTS The core drug is xingren. The commonly used 14 drugs include dongguazi， xiangbei， fuling， geke， sangye， pipalu， sigualo， jubai， et al. The couplet medicines are xingren-zhebei，xingren-dongguazi，ziwan-xingren， ziwan-zhebei. 9 groups of three drug combinations are zhebei-dongguazi-xingren， baiqian-dongguazi-xingren， sangye-donggauazi-xingren， ziwan-zhebei-xingren， fuling-zhebei-xingren， et al， which are effective in clearing heat and expectoration， dispersing wind-heat， regulating the flow of vital energy， and strengthening the spleen. The types of symptoms are tanreyufei，feiyinshousun， shenbunaqi， pishizhongzu， muhuoxingjin， tanhuoraxin， etc. There are corresponding medicine to different symptoms. CONCLUSIONS Inheriting the academic thought on treating warm-induced febrile diseases， his treatment is mainly based on dispelling evil and paying attention to nourishing yin. His medicine is cool and the texture is moist.