Dr. Yi-Hua Wu specializes in internal medicine, gastroenterology, hepatobiliary, various digestive diseases and endoscopic diagnosis and treatment, such as: abdominal pain, indigestion, constipation, diarrhea, gastroesophageal reflux, gastric ulcer, duodenal ulcer, colorectal polyps, intestinal fistula, common hepatobiliary diseases and acute and chronic hepatitis and other diseases, performing abdominal ultrasound, endoscopy, endoscopic hemostasis, diagnostic colonoscopy and colorectal polypectomy and other endoscopy and treatment, especially for the diagnosis and treatment of early digestive tract tumors and inflammatory bowel disease. To achieve the goal of early diagnosis and early treatment. Research areas include digestive tract bleeding, small bowel diseases and digestive tract cancer research.