There is used an object information acquiring apparatus that has a light source a photoacoustic probe including an emission end that emits light from the light source to an object and a reception section that receives an acoustic wave generated from the object to which the light is emitted a cover covering at least the emission end of the photoacoustic probe a light-shielding member provided inside the cover and filling a gap formed between the photoacoustic probe and the cover when the photoacoustic probe is inserted into the cover and a processor acquiring information on the inside of the object based on the acoustic wave.
