He has been engaged in clinical scientific research and teaching of common heart and lung diseases in internal medicine for a long time, and has a solid theoretical foundation of Chinese and Western medicine and rich clinical experience. He is especially good at treating common respiratory diseases such as chronic obstructive pulmonary disease, bronchial asthma, chronic cough, interstitial lung disease, sleep apnea, chronic rhinitis and other miscellaneous diseases in internal medicine, and has accumulated some experience in diagnosis and treatment of difficult respiratory diseases.