The present invention relates to a composition including melittin as an active ingredient for removing an M2-type tumor-associated macrophage (TAM), and more specifically, the present invention relates to a composition exhibiting an effect of selectively suppressing only M2-type tumor-associated macrophages among tumor-associated macrophages. The composition according to the present invention only suppresses M2-type tumor-associated macrophages without affecting M1-type tumor-associated macrophages or cancer cells, thus exhibiting anti-cancer and metastasis suppressing effects by blocking angiogenesis through control of the microenvironment of cancer cells, while reducing the side-effects of existing anti-cancer effects.
