Nowadays the remote sensing satellite networking and the constellation is in high construction requirements. There comes the problem that the software version on the satellite is updated frequently, the problem that the satellite is difficult to test for the complete scene process, and the problem that the multi-satellite task scene is difficult to create. In order to meet the satellite AIT test requirements in batch production mode, a co-simulation architecture is introduced to verify the key information flow and task flow of a single satellite. An integrated multi-level analysis and verification platform is established for collaborative verification of multi-satellite space segment protocols and tasks. At present, the platform has been applied to the equivalent test of multiple types of satellites, realizing the collaborative equivalent verification of single satellite information flow and multi-satellite tasks, and realizing the parallel test of multiple satellites, effectively improving work efficiency.