Bile duct stones are stones that form in the bile ducts inside and outside the liver and are the most common biliary system disorder. Bile duct stones obstruct the bile duct causing bile stagnation and secondary bacterial infection leading to the occurrence of acute cholangitis. Repeated bile duct inflammation can cause local duct wall thickening or scarring stenosis, and bile duct inflammation and stenosis can in turn promote stone formation. So, what are the dangers of intrahepatic bile duct stones? 1, biliary obstruction and infection Due to the direct relationship between the hepatic bile duct system and the parenchymal cells of the liver, severe hepatic cholangitis is often accompanied by severe hepatocellular damage, even leading to large areas of hepatocyte necrosis, which becomes the main cause of death from benign biliary disease. 2, acute phase complications can lead to death Acute phase complications of intrahepatic bile duct stone disease are mainly biliary tract infections, including severe hepatic cholangitis, biliary-derived liver abscess and accompanying infectious complications. The causative factors of infection are related to obstruction of the stones and inflammatory narrowing of the biliary tract. 3.Chronic phase complications can lead to hepatobiliary cancer The chronic phase complications of intrahepatic cholestasis include systemic malnutrition, anemia, hypoproteinemia, chronic cholangitis and biliary liver abscess, multiple hepatobiliary stenoses, hepatic lobe fibrosis atrophy, biliary cirrhosis, and portal hypertension. 4.Long-term stimulation affects liver function Both liver and bile are important digestive organs, and their secreted and concentrated bile is an important part of digestive juices. The fat ingested by human body depends on the emulsification and decomposition of bile before it can be absorbed and utilized.