Biliary bleeding, or hemocholesterolosis, is upper gastrointestinal bleeding caused by pathological communication between intrahepatic or extrahepatic blood vessels and the bile duct due to various reasons, and blood flows into the duodenum through the bile duct. Biliary bleeding is one of the main causes of upper gastrointestinal bleeding and is not uncommon in China. Generally, bile duct bleeding manifests as vomiting blood or black stools, but most cases are often occult and mild bleeding. According to the cause and location of bile duct bleeding, it is usually divided into two categories: intrahepatic and extrahepatic. 90% of bile duct bleeding comes from the liver, and less from the extrahepatic bile duct and gallbladder. The mortality rate is 7.2% to 33%.