The present invention provides an image management device and an image management method, both capable of easily performing comparison and reference of images in which taken images and processed images generated from the taken images are intermingled. For that purpose, based on the discrimination results of the attributes of the images by an attribute discrimination unit, an image classification unit classifies the processed images in order that the processed images may be mutually associated or processed images may be associated with taken images related to the processed images. A classified image list is displayed by an image list display unit, and images selected from the list are displayed on an image display unit. Furthermore, the image list displayed on the image list display unit is changed by classification switching by an image classification switching unit.