Medical Doctor, Postdoctoral Doctor in Gastroenterology, Associate Researcher Fellow (Associate Professor), Master Supervisor of Gastroenterology, and a high-level talent of Guangdong Provincial People’s Hospital. Dr. Dai has been engaged in the diagnosis and treatment of digestive diseases for more than ten years, and specializes in Crohn's disease, ulcerative colitis, gastrointestinal tumors, diarrhea, constipation, gastroesophageal reflux disease, Helicobacter pylori infection, chronic liver disease, peptic ulcer, intestinal flora imbalance and unexplained abdominal pain, fever, emaciation, jaundice, etc. His main research directions include the immunological mechanisms of inflammatory bowel disease (IBD), Helicobacter pylori and intestinal microecology. Dr. Dai has presided over 4 provincial and ministerial projects funded by the National Natural Science Foundation of China, etc. 13 SCI papers were published as the first author or corresponding author (8 papers belong to JCR I or II, including Journal of Crohn’s & Colitis, Clinical Nutrition, Journal of Gastroenterology and Hepatology), one of which was accepted by the World Congress of Gastroenterology (WCOG) and the European Congress of Gastroenterology (UEG); one was accepted by the Asian Crohn's Disease and Colitis Organization (AOCC) conference; three were published in the Chinese Journal of Gastroenterology. Professional Memberships include: an invited reviewer of Journal of Crohn’s & Colitis (IF 9.071); a member of the Helicobacter pylori and microecology group of the Gastroenterologist Branch of the Guangdong Medical Association; a member of the Editors' Board of Journal of Southern Medical University, Young Editors' Board of the Chinese Journal of General Practice, and a special reviewer for Digestive Diseases and Sciences.