This study uses the embedded browser in the most widely used CAD (Computer Aided Design) , with the mold-design navigating process of the secondarily developed component as the core, to construct a networked knowledge management platform with the interaction between the relational database management and mold-design navigating process. It then integrated the component knowledge database, historical cases and technical files, and gave the overall consideration of mold manufacture and injection molding to assist the mold design. The component knowledge database provides related components and shortens the time of mold design. The historical knowledge database offers related issue points for reference, reducing the repeated occurrence of design errors. The technical knowledge database furnishes the related knowledge in the process of mold development, accelerates the new employee training and cuts the labor cost. For the knowledge database in use, the data will automatically increase and grow, gradually becoming know-why and know-how of strong enterprises, know-what of handling problems and important core assets of the enterprise. The unified integration and utilization of the component, historical and technical knowledge databases make the mold-design navigating process more complete and accelerate the mold design. By data classification and grouping, a consistent GUI (Graphic User Interface) is established, replacing the words by icons, easier for developers to use. The accumulation and feedback of the knowledge databases provide more complete data, information and knowledge and thus considerably reducing the time for the mold development.