Liver function is the abbreviation of liver function test, which mainly includes aminotransferase, albumin, bilirubin and other items. 1. Transaminases: Common transaminases usually include alanine transaminase and glutamine transaminase, which are the main enzymes in the liver cells. In case of acute hepatitis, fatty liver or cirrhosis, the values of transaminases will be abnormally elevated, and sometimes they will be more than 3-5 times of the upper limit value. 2. Albumin: Albumin is a protein synthesized in the liver. If cirrhosis continues to progress, it is likely that albumin will decrease. 3. Bilirubin: bilirubin includes total bilirubin, direct bilirubin and indirect bilirubin, etc. If there is inflammation of intrahepatic bile ducts or intrahepatic stones, bilirubin will usually be elevated, and the patient will also have jaundice. Liver function tests can provide a detailed understanding of the specific conditions of the liver, as well as early detection of some liver diseases, which is very instructive for later diagnosis.