In China, liver cancer mostly occurs on top of hepatitis cirrhosis. Repeated episodes of hepatitis gradually mutate the genetic material of hepatocytes — the genes — to evolve into hepatocellular carcinoma. This evolution is generally as follows: cirrhotic regenerative nodules — low-grade atypical nodules — highly atypical nodules — atypical nodules with microfocal hepatocellular hepatocellular carcinoma — small hepatocellular carcinoma — large hepatocellular carcinoma During this process, the hepatic arterial blood supply to the nodules gradually increases and the portal vein blood supply gradually decreases. Multi-stage CT scan is based on this principle to detect early stage liver cancer. Early stage liver cancer is defined as only one cancer foci in the liver whose maximum diameter does not exceed 3 centimeters, or two cancer foci in the same liver lobe whose sum of diameters does not exceed 3 centimeters. Nowadays, it is not difficult to detect cancer foci of 2 centimeters in diameter by CT examination. Therefore, patients with cirrhosis who have atypical nodules should be closely monitored, with regular fetoprotein checks and ultrasound examinations to observe whether the nodules have increased in size and changed in nature, and CT, MRI and DSA examinations should be performed when necessary. As long as you pay attention to it, early stage liver cancer is not difficult to be detected. The treatment methods for early stage liver cancer are mainly interventional and surgical. Before surgical resection, DSA examination should be performed to clarify the location and number of cancer on the one hand, so as to provide a basis for the formulation of surgical plan. On the other hand, appropriate interventional treatment can also be performed to reduce intraoperative play. Interventional treatment is mainly for patients with poor general condition and liver function, and on the basis of interventional embolization, anhydrous alcohol injection, microwave, radiofrequency and other means of combined treatment can be performed. As long as the modalities are properly chosen and actively responded, early stage liver cancer is not incurable.