A photoacoustic wave measurement device receives electric signals from a photoacoustic wave measurement instrument including a light output unit for outputting light, and a plurality of photoacoustic wave detection units each for receiving a photoacoustic wave generated by the light in a measurement object, and converting the photoacoustic wave into the electric signal. The photoacoustic wave measurement device includes a time deviation determination unit that determines whether time deviations among the electric signals output from the respective photoacoustic wave detection units are in a predetermined range； and a position measurement unit that measures a position of a photoacoustic wave generation part of the measurement object which generates the photoacoustic wave if the time deviation determination unit determines that the time deviations among the electric signals are in the predetermined range.
