Member of Specialized Committee for Oral Medicine of Chinese Stomatological Association, Executive Member of Shanghai Stomatological Association, Vice Chairman of Specialized Committee for Oral and Maxillofacial Surgery of Shanghai Stomatological Association, Expert of Stomatology Group of Shanghai Medical Accident Identification Committee, Deputy Chief of Exert Group of Shanghai Stomatology Medical Quality Control Center, Expert of Stomatology Group of Senior Technical Title Review Committee in Shanghai Health System, Executive Editorial Board Member of Journal of Oral and Maxillofacial Surgery and Shanghai Journal of Stomatology, Director of Standardized Training Base for Resident Doctors of Stomatology and Director of Clinical Pharmacology Experiment of Stomatology of the Ministry of Health. Over the years, he was committed to the treatment of oral and maxillofacial tumor and recovery of postoperation tissue defect. He is specialized in surgical diagnosis and treatment of oral and maxillofacial tumor, cyst, malformation, fracture and infection and tooth-planting technology. He has made breakthroughs in the surgical treatment of malignant oral and maxillofacial tumor such as radical tongue-jaw-neck operation and functional neck dissection, especially the discussion of the surgical treatment of the oral cancer suffered by the patients with low immunity after organ transplantation.