Abstract: The Tracepro software was redeveloped using dynamic data exchange (DDE)communication technology.The universal methods for connection, transmission, request, etc. in DDE communication protocols were proposed to be used, in order to realize the functions of transmitting script from redevelopment software for simulation and then retrieving the simulation results and returning to the redevelopment software. In the software, functions such as automatic model generation, automatic parameter configuration, automatic simulation, and optimization analysis can be realized, which can improve the design efficiency. Taking the design of LED cup modeling and simulation software as an example, the interaction with Tracepro was realized in software, and the rapid modeling, design and simulation of LED were completed.