The present invention provides siRNA or dsRNA, which can effectively inhibit the expression of three highly expressed markers in liver cancer, and a pharmaceutical composition including the same can obtain excellent effects of preventing or treating liver cancer through RNAi. A pharmaceutical composition for preventing or treating liver cancer according to an embodiment of the present invention includes at least one of siRNA which includes a sense RNA having at least one sequence selected from the group consisting of sequences of SEQ ID NOs: 5 to 157, and an antisense RNA having a complementary sequence thereto and dsRNA having at least one sequence selected from the group consisting of sequences of SEQ ID NOs: 158 to 310.