To provide a manufacturing method of a three-dimensional image decorative object which makes even a person having no device-developing capability and no sufficient equipment to manufacture the object at a low cost, and can manufacture a single-product three-dimensional image decorative object which is free from a sense of incongruity regardless of the availability of image information such as the brightness of an image which becomes a motif.

A bottom image laminated part 4 is formed by using a three-dimensional printer by outputting a plurality of continuous two-dimensional layers each exhibiting a motif image 8. After this procedure, an intermediate image laminated part 3 is formed by outputting a plurality of continuous two-dimensional layers each exhibiting a motif image 7. Finally, a top image laminated part 2 is formed by outputting a plurality of continuous two-dimensional layers each exhibiting a motif image 6. Thus the top image laminated part 2 of a material 1 intended for engraving formed in the above way is engraved deep in the Z2 direction using an engraving knife etc. , while checking the printed motif image 6 by the eye, and the three-dimensional image decorative object 10 can be obtained.