Abstract：The experience of professor HONG Minli treating chronic cough from phlegm- retained fluid was introduced. HONG holds that the pathogenesis of chronic cough mainly lies in the latent phlegm-retained fluid，as well as the deficiency and failure of viscera and bowels. The treatment of chronic cough should be warming yang and resolving retained fluid， specifically，warming the lung to resolve retained fluid and dispelling wind and cold，warming yang to resolve retained fluid and fortifying the spleen to drain dampness，warming the kidney to reinforce the healthy qi and warming qi to move water. In addition，etiology should be taken into consideration；if there are signs of binding of phlegm and stasis，stasis- dissolving Chinese medicine should be added while resolving retained fluid. From the six syndrome differentiation，if patients cough for a long time，do not forget to consider a syndrome of recurrent phlegm rheum in shaoyang. The treatment should focus on making qi movement flow smoothly and freeing and regulating the waterways.