Checking the liver can be done by abdominal ultrasound, CT, blood tests for liver function, tumor markers, and so on. 1. Abdominal ultrasound: Abdominal ultrasound is a commonly used screening method to check liver diseases, which can observe the morphology and size of the liver, as well as the presence or absence of abnormalities such as space occupation, stones and portal hypertension. 2. Abdominal CT: Abdominal CT is more detailed and sensitive in observing the morphological changes of the liver, and the positive rate of 1cm in diameter can be more than 80%, and it can also determine whether there is abdominal lymph node enlargement, which can provide the basis for the follow-up treatment. 3. Liver function test: liver function test is a group of tests, including albumin, transaminase, bilirubin, blood glucose, blood lipid, etc., which can comprehensively evaluate the anabolic function of liver. 4. Tumor marker: alpha-fetoprotein is a relatively specific tumor marker for primary hepatocellular carcinoma, with a positive rate of about 70%, which can help to determine whether there is liver cancer or not. In addition to the above tests, liver-related tests include abdominal MRI, puncture biopsy, coagulation function, hepatitis virus-related tests, etc. It is recommended that patients consult professional doctors according to their own conditions in order to choose the appropriate tests.