The finite element analysis (FEM) of metal machining is a complex process. It is essential to exploit a system to construct a model of FEM so as to obtain simulation data more conveniently and rapidly. The key techniques of two-dimensional modeling in MSC.Marc software and the whole modeling procedure of metal orthogonal cutting process were presented. The rule based on the modeling process was also investigated. The system’s interface, designed using C++ Builder, can access data which includes the geometrical angles and dimensions of tool, the sizes of work, the relative position between tool and work, properties of tool and work, cutting conditions, etc.. The procedure file which can model in MSC.Marc environment automatically is generated by the program. The parametrical modeling of simulation is completed by the procedure file. Finally, case studies were performed to study the simulation model, interface and simulation.