An object information acquiring apparatus that transmits an acoustic wave to an object, and receives and analyzes the reflected acoustic wave to acquire internal information of the object, comprises a probe that transmits and receives the acoustic wave a holding member disposed between the object and the probe to hold the object and an air bubble detection unit that detects an air bubble present between the object and the holding member on the basis of an intensity of the acoustic wave received after a first time from the transmission by the probe, the first time being calculated on the basis of a time when the acoustic wave reaches a predetermined distance.
