It is necessarily to study a new wire of economic section for market of building materials and development of social progress. Based on hardware to requirement of software, this paper exploits a computer simulation system for special straightening and shearing of wire, it face to the engineering directly. The software adopts the structure systems, which includes structure type, modularity, and expert system ability. The algorithm of the system is reliable. Its function is complete. Interface is friendly. It can be widely used in practical engineering.