Recent studies have demonstrated that arsenic trioxide (As2O3) can act as the first-line therapeutic option in the treatment of acute promyelocytic leukemia. Thereafter, several small studies in China showed promising clinical benefits when As2O3 is administrated among the HCC patients. With these preliminary results, the investigators are planning to carry out a multicenter randomized controlled trial through which to explore the potential efficacy and safety of adjuvant As2O3 treatment for HCC patients.