Reconfigurable design is becoming more and more important in the product design. Based on the interchange and the assembled character of the module, module design is the main technology of carrying out reconfigurable design. Reconfigurable design system in this paper uses function and structure module, builds the virtual design floor to decompose and mapping the function and structure of the stone grinding equipment. Based on the equipment database created in Pro/Engineer software, this software can design, modify and assemble the module and the whole product according to the customer requirements. The application effect of this software is prefect.