An image classification device, determines in real time which one of a plurality of directories is a suitable directory for storing newly taken photographs. The plurality of directories may defined by a user. The image classification device may recommend the suitable directory to the user. The image classification device may include a camera module for photographing a target and for generating a target image, a sensor for sensing first environment information concerning the target image, a storage module including N directories for storing the target image, where N is a natural number, and a processor for extracting first content information from the target image and for selecting from among the N directories a suitable directory within which the target image may be stored, based on the first content information and the first environment information.