Cough is a common clinical symptom, throughout history the medical experts have different discussions on the diagnosis and treatment of cough and put forward different theories on the treatment of cough. Chief physician Zhang Hongxing is a famous old doctor of traditional Chinese medicine in Dezhou city with rich experience in clinical practice and unique academic thoughts. In the treatment of exogenous cough, Director Zhang stressed that the differentiation of syndromes should be focused on ‘wind’ and pay attention to the role of liver ‘wind’ in cough. The prescription of medicines should emphasize on dispelling the ‘wind’ first, to dispel the external ‘wind’, but also to calm the internal ‘wind’, and making good use of Uncaria in medicine. Valuable experience for clinical diagnosis and treatment of exogenous cough was provided.