Abstract: By analyzing the product research and development design characteristics and integrated design requirements of ship supporting enterprises, combined with the development direction of digital product research and development design and information systems, and the production and manufacturing requirements of ship supporting enterprises, a collaborative design platform based on PDM system is constructed. We have conducted in-depth research and analysis on the overall architecture, key technologies, functional design, and collaborative mode of the collaborative design platform construction, laying a solid foundation for the platform to be truly implemented and applied in ship supporting enterprises. The landing application of this platform will effectively break down the internal information silos of enterprises, optimize and restructure the design process through data-driven approaches, significantly improve the response speed of enterprises to personalized customer needs, enhance the scientific and efficient nature of product research and development design, and ultimately empower ship fitting enterprises to build technological innovation advantages and consolidate core competitiveness in fierce market competition.