Abstract:Design of Cable Laying is the main content of the design of electric design of the ship. By combining the process of Design of Cable Laying, a Simulation PlatformSof Cable Virtual Laying for Ship is developed based on AutoCAD Secondary Development. The key techniques such as the establishment of of Mathematical Model of virtual cable channels, design of interactive graphic laying interface, implementation of shortest path algorithm with restrictions, simulation of cable channel and generation of tray form is illustrated. The development of the PlatformSof Cable Virtual Laying for Ship is already completed and the function of virtual laying for ship cable is initially realized. The platform offers designers an intuitive and convenient way of the design of cable laying, which simplifies process of design of cable laying, improves the efficiency and quality and saves the amount of cable.