A hologram duplicating device (10) comprising a first optical system (30) for fabricating an original (H1) by recording a holographic stereogram image on a recording medium for hologram by exposure, a second optical system (60) for fabricating an intermediate hologram (H2) by recording the image recorded on the original (H1) on a recording medium for hologram disposed at a predetermined distance from the original (H1) by exposure by using a diffracted light produced by illuminating the original (H1), and a third optical system (70) for fabricating an edge-lit hologram by recording the image recorded in the intermediate hologram (H2) on a recording medium for hologram disposed at a predetermined distance from the intermediate hologram (H2) by exposure by using a diffracted light produced by illuminating the intermediate hologram (H2).