Liver function tests show an increase in total bilirubin in patients with hepatocellular jaundice or obstructive jaundice, and commonly in viral hepatitis, where a long history of declining liver function affects bilirubin metabolism or hepatic and intestinal circulation, which can also result in an increase in bilirubin, manifested as an increase in total and indirect bilirubin. In patients with biliary system stones and obstructive jaundice, there is mainly an increase in total and direct bilirubin, as well as significant abdominal pain, fever, loss of appetite, nausea and vomiting after eating, mainly due to stones in the biliary system. The abnormal bile evacuation and secondary bilirubin abnormalities require surgical treatment to relieve the obstruction.