The extent of the movement area of an autonomous mobile object is appropriately fed back for the extent of the movement area in the next operation at a low cost. An autonomous mobile object (1) includes an operation result map creation unit (21) that creates, on the basis of a log of the position of a cleaning brush (9), an operation result map in which a cleaned area is indicated, and a next-cleaning-area setting unit (22) that sets a next cleaning area on the basis of the operation result map displayed on an operation panel (13).