The present invention relates to a composition for maturing dendritic cells, comprising, as a maturation-promoting factor, Interleukin-1β (IL-1β), Interleukin-6 (IL-6), Tumor necrosis factor-α (TNF-α), Interferon-γ (IFN-γ), Prostaglandin E2 (PGE2), Picibanil (OK432) and/or Poly IC. The composition for maturing dendritic cells of the present invention may have the effects of not only improving the ability of dendritic cells to induce an immune response, but also of decreasing the antigen non-specific immune response of dendritic cells and increasing antigen-specific immune response of dendritic cells, thus maximizing the effects of immunotherapy.
