Inclusion Criteria:  Radical hepatocellular carcinoma was treated 4 weeks (±1 week) ago, and the pathological diagnosis was HCC after surgery, and MVI was positive Child-Pugh score ≤9 points (Child-Pugh A-B), PS score 0-2 points, BCLC stage A-B The main portal vein is not completely obstructed, or although it is completely obstructed, the compensatory collateral branches of the portal vein are abundant or the portal vein blood flow can be restored by implanting the portal vein stent With sufficient organ and bone marrow function, the laboratory test values within 7 days before enrollment meet the requirements Physical fitness score ECOG 0～2 Expected survival> 3 months No other systemic malignancies Female subjects of childbearing age or male subjects whose sexual partners are females of childbearing age must take effective contraceptive measures throughout the treatment period and 6 months after the treatment period Subjects have informed consent, understand and are willing to cooperate with the trial protocol, and sign relevant documents  Exclusion Criteria:  Histology includes fibrolamellar hepatocellular carcinoma, sarcomatoid hepatocellular carcinoma, cholangiocarcinoma, etc. Severe liver dysfunction (Child-Pugh C), including jaundice, hepatic encephalopathy, refractory ascites, hepatorenal syndrome, or a history of liver transplantation The main portal vein is completely blocked, and the formation of collateral vessels is small