Gamma-glutamyltransferase is a biological enzyme that is an indicator of liver function. It is mainly found on the membrane of liver cells and microsomes, and is involved in the metabolism of glutathione, which is an important indicator for checking liver function. It is abundant in kidney, liver and pancreas, but the serum γ-glutamyltransferase mainly originates from the liver, so when the liver cells are damaged or bile excretion is obstructed, the serum γ-glutamyltransferase will increase . High γ-glutamyltransferase often indicates viral hepatitis, intrahepatic or extrahepatic bile duct obstruction, fatty liver, cirrhosis, cholangitis, cholecystitis and other diseases, so it is important to pay attention to the indicators when they are elevated. If abdominal pain, abdominal distension, nausea, vomiting and other symptoms, it is recommended to go to a regular hospital, the feasibility of liver function tests and imaging tests to see whether there is an abnormality in the serum r-glutamyltransferase to rule out the possibility of disease, and then comply with the doctor’s instructions for systematic treatment.