A distance image measurement device comprising: a light source configured to generate pulsed light; a light source control means (31, 33, 36) configured to control the light source so that the pulsed light having a first duration is repeatedly generated within a periodic frame period; a pixel circuit unit including a photoelectric conversion region configured to convert light into charge, first to M-th charge readout regions (M is an integer equal to or greater than 2) provided to be close to the photoelectric conversion region and separated from each other, and first to M-th control electrodes provided in correspondence with the photoelectric conversion region and the first to M-th charge readout regions and for applying first to M-th control pulses for charge transfer between the photoelectric conversion region and the first to M-th charge readout regions; a charge transfer control means (32, 37, 34) configured to sequentially apply the first to M-th control pulses to the first to M-th control electrodes only for a second duration within the frame period in correspondence with the generation of the pulsed light by the light source control means (31, 33, 36); a signal readout means configured to read out a detection signal according to first to M-th amounts of charge, the first to M-th amounts of charge transferred to the first to M-th charge readout regions of the pixel circuit unit according to the application of the first to M-th control pulses by the charge transfer control means (32, 37, 34); a distance calculation means configured to repeatedly calculate a distance from a difference value between two of the first to M-th amounts of charge on the basis of the detection signal; and a pseudo random number generation means configured to generate a pseudo random number, wherein the light source control means (31, 33, 36) is configured to change a generation timing of the pulsed light according to the pseudo random number, and the charge transfer control means (32, 37, 34) is configured to change timings of application of two control pulses for transferring charge corresponding to the two amounts of charge among timings of application of the first to M-th control pulses according to the pseudo random number so that the timings are replaced with each other, to thereby offset an influence of pulsed light mixed from the outside on a difference value of the two amounts of charge. a light source configured to generate pulsed light; a light source control means (31, 33, 36) configured to control the light source so that the pulsed light having a first duration is repeatedly generated within a periodic frame period; a pixel circuit unit including a photoelectric conversion region configured to convert light into charge, first to M-th charge readout regions (M is an integer equal to or greater than 2) provided to be close to the photoelectric conversion region and separated from each other, and first to M-th control electrodes provided in correspondence with the photoelectric conversion region and the first to M-th charge readout regions and for applying first to M-th control pulses for charge transfer between the photoelectric conversion region and the first to M-th charge readout regions; a charge transfer control means (32, 37, 34) configured to sequentially apply the first to M-th control pulses to the first to M-th control electrodes only for a second duration within the frame period in correspondence with the generation of the pulsed light by the light source control means (31, 33, 36); a signal readout means configured to read out a detection signal according to first to M-th amounts of charge, the first to M-th amounts of charge transferred to the first to M-th charge readout regions of the pixel circuit unit according to the application of the first to M-th control pulses by the charge transfer control means (32, 37, 34); a distance calculation means configured to repeatedly calculate a distance from a difference value between two of the first to M-th amounts of charge on the basis of the detection signal; and a pseudo random number generation means configured to generate a pseudo random number, wherein the light source control means (31, 33, 36) is configured to change a generation timing of the pulsed light according to the pseudo random number, and the charge transfer control means (32, 37, 34) is configured to change timings of application of two control pulses for transferring charge corresponding to the two amounts of charge among timings of application of the first to M-th control pulses according to the pseudo random number so that the timings are replaced with each other, to thereby offset an influence of pulsed light mixed from the outside on a difference value of the two amounts of charge.