3D DesCAD is a powerful tool for the designer and creator of the model, and all the work of the daily design work is included in it. DesCAD 3D elements of the but by using the contact type, optical and scanning probe, the workpiece and the model of geometric elements and surface digitalization, and this data to be seamlessly input and output to the computer aided system now, such as CAD CAM or CAQ and. The system test users can generate milling process, even if it is for non WENZEL controller, can be milling on the surface of the machine. The modular software architecture provides a simple and clear user interface for all the software functions, and does not require any additional software packages. After editing the milling program, the two dimensional continuous rotating milling head of CNC can realize the uninterrupted operation of the unmanned ground.