Chief physician, Vice director，Professor

Department of Gastroenterology

Peking Union Medical College Hospital

Chinese Academy of Medical Sciences & Peking Union Medical College

Member and Deputy Chief, Group of Inflammatory Bowel Disease, Chinese Society of Gastroenterology, Chinese Medical Association

Appointed Chairman of the Clinical Epidemiology & Evidence-based Medicine Branch of Beijing Medical Association

Vice director of the Intestinal Microecology & Helicobacter pylori Branch of Beijing Medical Association

Editorial Board Member, Chinese Journal of Inflammatory Bowel Disease