[Objective]To review and summarize the academic experience of Professor LAO Changhui in the treatment of postinfective cough.[Methods]By clinical shadowing,recording medical cases and reviewing literature,the clinical experience of Professor LAO in the treatment of postinfective cough was summarized from three aspects:etiology and pathogenesis,clinical treatment,feeding and nursing.Two medical records were attached to support it.[Results]Professor LAO believes that the postinfective cough belongs to the category of cough in traditional Chinese medicine and the key of differentiation lies in external and internal injury.The treatment should be carried out according to the physiological characteristics of lung"preferring moist,hating dryness and not resistant to cold",and prescription should be based on pathological products and functions of Zang-Fu organs.Xuanfei Huatan Decoction and Shegan Mahuang Decoction were the main prescriptions for patients whose postinfective cough was caused by external factors;while Liujunzi Decoction was the main prescription for patients whose postinfective cough caused by internal injury.This article also discussed dietary therapy for cough after infection.In the first case cited,Professor LAO identified it as phlegmatic hygrosis syndrome,and used Shegan Mahuang Decoction.By warming the lung and evaporating fluid,the lung can restore the function of dispersiveness.In the second case,Professor LAO identified it as liver depression and Qi stagnation,and used Banxia Xiexin Decoction.By soothing the liver and regulating Qi,balancing cold and heat,making the Qi movement normal,all symptoms were relieved.[Conclusion]Professor LAO focuses on the differentiation of external and internal injuries in the treatment of postinfective cough,emphasizes the combination of disease and syndrome differentiation,adds or subtracts drugs according to the pathological products of patients and the function of Zang-Fu organs,pays attention to diet care,and has achieved stable clinical efficacy,which is convenient for clinical application and promotion.