The present invention relates to a composition comprising an egg white combined chalcanthite component for preventing or treating cancer, and more particularly, to a composition for preventing or treating cancer, which comprises egg white combined chalcanthite prepared by mixing a roasted chalcanthite with egg white to reduce the toxicity of the chalcanthite or comprises a mixture of the egg white combined chalcanthite and a bamboo salt, and a method for preparing the same. The composition comprising the egg white combined chalcanthite exhibits excellent anti-cancer activity, and thus is usefully applicable to pharmaceutical preparations for preventing or treating cancer or the manufacture of health functional foods.
