Liver cancer is one of the common diseases and one of the main diseases threatening people’s health, and once detected, most of them are in the middle and late stages, and being able to detect and treat early is the only effective way to prevent it. So, how can we achieve early detection and treatment? First of all, we need to know several bases for diagnosing liver cancer: 1. History of hepatitis B or only hepatitis B two pairs of half has problems (in China, about 85% of liver cancer patients have the basis of hepatitis B, and there are still a few patients who do not have the basis of hepatitis B; in western countries, most of them have the basis of hepatitis C and alcoholic cirrhosis, and the incidence of hepatitis C and alcoholic cirrhosis in China has been on the rise in recent years). . 2.B ultrasound and CT or MRI suggest liver occupancy, and the imaging characteristics are consistent with liver cancer (e.g. CT scan shows that the contrast agent in the mass is “fast in and fast out”). 3. High AFP (70-80% of liver cancer patients are high, while 20-30% of patients are not high); 4. In view of the above, for the hepatitis B virus carrier population, it is recommended to have at least one health checkup per year, and the focus of the checkup is around the liver, among which the items that must be checked include: ultrasound of liver, gallbladder, pancreas and spleen, laboratory liver function, blood routine, AFP. If there are suspicious cases, further checkup items will be selected as needed.