To provide a manufacturing method of a press die formed of resin in which cutting is easy, the delivery time is short, the price is inexpensive, and a deep uneven pattern is formed in the case of manufacturing a press die used in the pressing for producing ceramic or metal interiors and exteriors and roofing materials which are excellent in design.

Hard synthetic resin 29 having easy cuttability and pressing property and wear resistance not inferior to those of the metal is used only for a cutting surface of the press die, and the hard synthetic resin layer is cut to realize the pattern by a machining center 32 at high speed rotation and feed.