Hepatobiliary surgery is a tertiary discipline belonging to general surgery, and the main organs involved are the liver, biliary tract, pancreas, spleen and duodenum. Not every hospital has a specialty setting for hepatobiliary surgery, and in many hospitals, it is classified as general surgery or major surgery. At Peking Union Medical College Hospital, hepatobiliary surgery is classified as basic surgery. The diseases treated in hepatobiliary surgery are mainly tumors, inflammation, stones, trauma, congenital diseases and vascular diseases of the liver, biliary tract, pancreas and spleen. Specifically, common diseases include primary liver cancer, hepatic hemangioma, liver abscess, liver cyst, gallbladder stones, bile duct stones, congenital bile duct cysts, biliary tract tumors, pancreatic cancer, pancreatic neuroendocrine tumors, solid pseudopapillary tumors of the pancreas, pancreatitis, spleen tumors, etc. A special note is needed for viral hepatitis and cirrhosis. Hepatobiliary surgery does not treat viral hepatitis, nor does it perform conservative treatment of cirrhosis, but only admits patients when hepatitis or cirrhosis has caused a condition that requires surgical management. For example, liver failure caused by fulminant hepatitis requires liver transplantation in hepatobiliary surgery; cirrhosis causes portal hypertension, resulting in hypersplenism and severely reduced platelets, requiring splenectomy in hepatobiliary surgery; cirrhosis causes esophagogastric varices, resulting in gastrointestinal bleeding, requiring surgery for portal hypertension in hepatobiliary surgery, etc. For the treatment of viral hepatitis, please go to a specialized hepatology or infectious disease department for treatment.