Abstract: Provided is a method of manufacturing rice taffy, and more specifically, a method of manufacturing rice taffy having excellent functionality by adding collagen. The method of manufacturing rice taffy according to the present invention includes a saccharification step of saccharifying a mixture of hard-boiled rice, malt, and water and thus obtaining a saccharified solution, a concentration step of concentrating the saccharified solution by applying heat and thus obtaining black taffy, an addition step of adding collagen to the black taffy, and a stretching step of repeatedly stretching the black taffy to which collagen was added.