In China, liver cancer mostly occurs in specific groups of people, such as patients with viral hepatitis, alcoholic liver disease, fatty liver and immune liver disease. Among them, viral hepatitis is mostly seen in hepatitis B and C. In fact, liver function only represents whether the liver has been functioning normally in the recent past, and for the patients mentioned above, normal liver function does not mean that the disease has not progressed. Especially in patients with viral hepatitis, the virus may appear to “coexist peacefully” with the body for a long period of time, making it easy to take it lightly, but the virus does not stop replicating and may cause genetic mutations at some point. Therefore, patients are reminded to have regular medical checkups with a specialist, and to have both blood and imaging tests, which are complementary to each other. If only blood indicators, such as liver function and methemoglobin, are checked without imaging, it is easy to delay the disease and miss the best time to treat the disease, thus reducing the quality of survival.