Liver disease examination programs include laboratory tests, imaging tests and pathology tests. 1. Laboratory examination (1) Liver function test: the purpose of checking liver function disease, the test items include alanine aminotransferase (ALT), menthionine aminotransferase (AST), glutamyl transpeptidase (γ~GT), human albumin A, prothrombin time (PT) and serum coagulation factor levels. (2) Hepatitis virus examination: it is an important examination for diagnosing viral hepatitis and determining hepatitis A, B, C, etc. The specific examination items include HAV, HAC, and HAV. Specific tests include HAV, HEV test, HBV test, HCV test, HDV test. (3) Alpha-fetoprotein test: a golden chemical indicator for checking liver cancer. If patients have obvious and continuous elevation of alpha-fetoprotein, the possibility of liver cancer should be considered. 2. Imaging examination (1) Ultrasonography: it is the first choice of non-invasive examination, which can measure the size of liver and parenchymal lesions, and is used to diagnose fatty liver, cirrhosis and liver parenchymal space-occupying lesions. (2) Color ultrasound: It can measure the direction and flow rate of blood flow in portal vein and hepatic artery, and determine whether there is hepatic vein opening. (3) X-ray, CT and magnetic resonance imaging (MRI): it can directly observe liver occupying lesions such as abscesses and tumors, etc. It is also of great value in the diagnosis of diffuse liver lesions (such as fatty liver, cirrhosis, etc.). 3.Pathologic examination Liver puncture biopsy: visualization of hepatocellular lesions under the microscope can determine the clinical diagnosis of liver disease; judge the severity of liver disease; evaluate the effect of liver disease treatment.