The present invention relates to the use of N-(2-aminoethyl)-N-(4-benzyloxy)-3-methoxybenzyl)thiophene-2-formamide hydrochloride for treating liver cancer. The N-(2-aminoethyl)-N-(4-benzyloxy)-3-methoxybenzyl)thiophene-2-formamide hydrochloride of the present invention can effectively inhibit the growth of liver cancer cells and has a therapeutic effect on liver cancer.