This acticle Advances the concept of reverse CAD.Through the example of establish gemel four-bar mechanism, sets forth in details the idea 0f developing simulation system by reverse CAD.

• 摘要提出CAD逆向设计的概念，并通过建立铰链四杆机构仿真系统的实例，详细介绍了应用该方法开发仿真系统的全过程。