A management program for managing a plurality of image data recorded on the recording section by storing the image data into a destination recording section according to a unit of recording medium or image data type, wherein original image data as a basis for the missing or modified image data are read from recording section at predetermined timings and are restored, or the information for identifying the recording site of the original image data for the missing or modified image data is displayed, thereby the missing or modified image data are automatically restored so that image data in an electronic album is surely stored and managed.