To provide a punch press die and its manufacturing method wherein it can be used for punch processing of a thick plate or a stainless steel plate for a long time continuously.

After a rough processing S1 is applied to a die material, a thermal treatment S2 such as a quenching and a tempering is performed and, then a finishing processing S3 is performed. After then, at a contacting portion between a cutting blade portion of the die and a plate material, a nitriding layer is formed with an ion nitriding in the same vacuum tank. Surface of this ion nitriding layer is cleaned, and an ion plating is applied to the cleaned nitride layer surface with a titanium evaporated grain so as to form a coating on the surface layer part with a titanium nitride, carbide or a carbon.nitride or the like.