To provide a production system for metallic mold, with which the form of a metallic mold desired by an orderer can be exactly produced in a short time at low cost.

In the metallic mold production system for producing a metallic mold by simulation work on the basis of a model, this system is provided with a form specifying means for specifying the form of the mold itself or form of an article molded by the mold on computers 1 and 2 and a model forming means 6 for forming the model on the basis of form data prepared by this form specifying means, and the form specifying means is made into solid modeling kernel provided by a required component expressing a phase structure and a geometrical structure for forming a three-dimensional form and an arbitrary component to be arbitrarily selected when expressing the phase structure and the geometrical structure.