The invention relates to mechanical design, management, assembly and final encasement systems, in particular to a product data management (PDM) design system capable of comprehensively managing design. The PDM design system comprises a PDM image-text document management module, an FC and FD template design formation module and a bill of material (BOM) design management statistic module, wherein the PDM image-text document management module, the FC and FD template design formation module and the BOM design management statistic module are associated with each other. The PDM image-text document management module comprises a design management module, a part standardization module, a technology standardization module and a filing management module, wherein the design management module, the part standardization module, the technology standardization module and the filing management module call each other. The FC and FD template design formation module lists output parameters, adds functional relationship, variable series and corresponding relations, wherein the functional relationship, the variable series and the corresponding relations are based on the parameters, gives a program a language, and presents output attributes in a BOM. The principle of mechanical designing is followed. According to selection, utilization and statistics which meet materials, professional customization suitable for various projects with the same product structure is achieved. According to combination of products, structural styles of parts are shown, the requirements for enterprise resource planning (ERP) output project materials are combined, and therefore comprehensive management for the design is carried out.