An animation image generating program is provided which allows animation images to be readily generated by CG without complicated setups, and more particularly the animation image generating program is suited to generate a plurality of types of face animation images by CG. The animation image generating program includes the steps of controlling selection of specific vertices of a standard model and a user model, providing control such that first target vertices are associated with second target vertices where the first target vertices are the selected specific vertices of the standard model and the second target vertices are the selected specific vertices of the user model, providing control by arithmetic means such that coordinates of the first target vertices approximate to those of the second target vertices, to generate fitting information, and animating the user model based on animation data of the standard model and on the fitting information.