An object information acquiring apparatus of the present invention includes a supporter supporting a plurality of irradiators that each applies a light beam to an object and a probe that receives an acoustic wave from the object, an irradiation controller controlling the light beam from each of the plurality of irradiators, a movement controller moving position of the supporter, an acquirer acquiring information related to a light amount suppressing area, and an information processor generating characteristics information of the object, and the irradiation controller suppresses alight amount applied to the light amount suppressing area.
