The topic is according to the laminated-speed Gel-type technology to design all the parts of the RP machine, establish the 3D model，assemble the parts together by Pro/E，set the parameters, such as motor parameters and so on, and finally achieve the 3D simulation of the device. The real movement process can be seen by the simulation. It is also available to analyze the rationality of the design according to the simulation. Besides, ANSYS is used to analyze the distortion of the workbench, and a certain degree of distortion is found to have affected the precision of the ceramic parts process at some extent. Based on this, the structure is changed and analyzed again, and then all the requirements have been met. At last, a control system is designed in accordance with requirements of the rapid prototyping machine. Thus the whole design of the machine is completed.