A scanning confocal microscope apparatus includes: a scanning confocal microscope that includes an objective lens; a computing device that divides a range in a direction of an optical axis of the objective lens of a preliminary scanning area on which preliminary scanning has been performed into a plurality of groups, in accordance with data obtained by performing the preliminary scanning using the scanning confocal microscope; and a controller that controls the scanning confocal microscope so as to perform principal scanning in which at least a portion of the preliminary scanning area is scanned under a measurement condition determined for each of the plurality of groups.