To provide reduction of man-hour and general processing at the time of executing optimizing simulation of a design model.

This system has memories 3-7 for storing optimization condition of the design model, a collision condition, initial shape data, material data and reference vector data according to a determined format, an input part 1 for instructing the run of a program, a structure change part 11 for changing the shape, thickness and material of the design model, a finite element operation part 13 for performing finite element operation according to the collision condition, a target function extracting part 15 for extracting a target function value on the basis of a finite element operated result, an optimizing operation part 17 for generating an optimal solution based on the optimizing operation, a memory 20 for storing an optimizing operation history and a display part 2 for displaying the optimizing operation history.