Mildly high bile acid is not a big problem, but long-term elevation can easily cause cirrhosis, digestive bleeding or even death. High bile acid directly reflects the liver function of the human body, and is a more effective indicator of liver function. Most patients can return to normal within a period of time after meals, and the danger is almost 0. If the elevation of bile acid is more obvious and longer, it can easily lead to biliary cirrhosis, which can cause portal hypertension or hypersplenism. Some patients are prone to hepatic encephalopathy, hepatorenal syndrome, gastrointestinal bleeding and other manifestations, which should be treated promptly and symptomatically, otherwise it will lead to human death. Congenital biliary atresia in newborns can also cause elevated bile acids, which should be treated promptly, otherwise it can affect the liver function of newborns and form liver failure resulting in death.