The routine liver function includes three bilirubin items, namely total bilirubin, direct bilirubin and indirect bilirubin, and two aminotransferases, namely glutamate aminotransferase and glutamic oxalacetic aminotransferase. 1. jaundice, liver cancer, pancreatic head cancer, gallstone disease, bile duct cancer and other diseases; 3, indirect bilirubin: also known as non-conjugated bilirubin, elevated serum indirect bilirubin, mainly related to various hemolytic diseases, hepatocellular jaundice can also be elevated indirect bilirubin; 4, glutathione aminotransferase: is an important indicator for the diagnosis of viral hepatitis, toxic hepatitis, but also a sensitive marker of acute hepatocellular damage; 5, glutathione aminotransferase: is An important indicator for the diagnosis of viral hepatitis and toxic hepatitis, and a sensitive marker for hepatocellular damage; also used as an auxiliary test for myocardial infarction and myocarditis. If GLTA/GALT <1, it indicates serious liver cell damage and needs to pay attention to the prognosis. The five liver function tests are the basic indicators of liver function testing. If abnormalities occur, further improvement of the five hepatitis B tests, liver ultrasound and other related tests should be performed to make a clear diagnosis.