1. An image filing method in which a plurality of images are registered in a storage means and a retrieval of the registered images is executed by adding a retrieval condition, each of the plurality of images having color defined by a color space, the method comprising the steps of: (a) dividing the color space of each of the plurality of images into a plurality of color subspaces to assign a plurality of symbols, each of the plurality of symbols being specific to a corresponding one of the plurality of color subspaces; (b) registering the images into the storage means corresponding to at least one condition of the kind, position and size of each of the plurality of symbols; and (c) reading the images corresponding to at least one condition of the kind, position and size of the plurality of symbols as the retrieval condition out of the storage means.