The normal value of AFP is 0-20μg/L. When liver cancer occurs, the measured value of AFP may increase 5-10 times and show a progressive increase, which, together with the patient’s medical history and imaging performance, may play a decisive role in confirming the diagnosis of liver cancer. 2. Other non-specific tumor markers, including CA199, CA125, etc. Although these tumor markers may be significantly elevated in liver cancer patients, they may also be elevated in other GI tumors such as gastric cancer and pancreatic cancer. When tumor markers are significantly elevated, it must be taken seriously and should be actively combined with imaging and other biochemical indicators for further investigation.