An image managing method of an image managing apparatus having an image memory which stores an image file provided with date and time information, and a display portion which displays a first display area and a second display area, includes, selecting a display mode as a system which displays in the second display area, displaying a plurality of unit periods which are used to select a period in the first display area, selecting at least one unit period from the plurality of unit periods, displaying a calendar of the selected unit period in the second display area when the display mode is a calendar display mode, extracting from the image memory an image file provided with date and time information included in the selected period when the display mode is an index display mode, and displaying an index image of the extracted image file in the second display area.