The present invention relates to a pharmaceutical composition for treatment of cancer, which comprises, as an active ingredient, one or more miRNAs selected from the group consisting of miR-3670, miR-8078, and miR-4477a. The pharmaceutical composition for treatment of cancer according to the present invention exhibits excellent effects of inhibiting cancer cell proliferation and inducing cancer cell apoptosis. Thus, the pharmaceutical composition of the present invention can be effectively used as an anticancer therapeutic agent.
