Disclosed are an event-specific taken picture arrangement device, a control method thereof and a control program thereof capable of efficiently observing the status of a change of a specific object by event. Multiple pictures P are divided into event picture groups ga1, gb1, gc1, and the like by event using a picture-taking date. The event picture groups ga1 and the like are further grouped into a plurality of groups of taken picture Ev1 to Ev6 by identical event. The taken pictures P of the identical event are consecutively arranged in an electronic album by identical event.