A method of producing a decorative plate includes affixing a plurality of pieces (segments) for forming a decorative image to a predetermined position of a base plate on which a base design is depicted. Specifically, the method includes providing marks (or signs) on the base design of the base plate in a close contact relation with each other, the marks each having the affixing order therein by means of shade (gradation) of a color of the image to be produced. The pieces (segments) are affixed to predetermined positions of the base plate according to the shade (gradation) of the color of the image. This permits an affixing operation in an accurate order by simply seeing only the color (gradation) on the base plate.