To prepare very high resolution computer-generated hologram having many numbers of parallaxes, a computer-generated holographic stereogram, with virtual point light source group set up spatially on a side opposite to the hologram observation side, luminance angular distribution AWLci (θxz, θyz) of divergent light from each virtual point light sources of said group toward observation side is divided by angular division, and within the divided angle, among the multiple images positioned on the plane of said group, divergent light equal to the divergent light diverged from a point of amplitude equal to the density of pixel of each divided angle corresponding image or equal to a value in a certain fixed relation with the density of the images at the position of the virtual point light source is recorded as the object light at one of the positions on the observation side of the virtual point light source group.