Hepatocellular carcinoma (HCC) is one of the most common malignances seen in different regions of the world. Surgical resection provides the best chance of cure for selected patients. However, we have long been perplexed by high rates of tumor recurrence, which is often the main cause of long-term treatment failure. The 5-year risk of recurrence of HCC after resection has been reported to be as high as 70%. It has been proposed that best way to reduce recurrence is to search for improved adjuvant therapies. Especially for some postoperative patients who were identified with the risk factors for recurrence, several adjuvant therapies were often used, including TACE. However, the safy and efficacy of preventive therapy is still not clear.