Abstract: It is important for system simulation to build up a simulation platform. A simulation platform scheme, which was able to integrate varied space intercept missions,easy to extend,and with perfect visualization ability, was presented. The hiberarchy of the platform, main functions of each layer, and relationship between layers were introduced. The platform-s architecture was described in detail. The implementation of visualization and concrete approaches to integrate varied missions were particularly studied. It is demonstrated through practice that this platform is capable of performing multi space intercept tasks, easy enough to extend, and convenient to study space intercept problems due to its powerful visualization.