An object information acquisition apparatus according to the present invention includes a plurality of conversion elements configured to receive waves reflected at each position inside an object, and convert the reflected waves into a plurality of received signals, a fixed signal processing unit configured to apply addition with a predetermined weight to the plurality of received signals to acquire first distribution information, an adaptive signal processing unit configured to apply adaptive signal processing to the plurality of received signals to acquire second distribution information, and a display control unit configured to input the first distribution information and the second distribution information, and output image information to a display unit, wherein the display control unit outputs image information for displaying in parallel in the same screen an image of the first distribution information, an image of the second distribution information or a combined image of the first and second distribution information.
