Abstract: In order to obtain the dynamics response parameters of the satellite during the launch and in-orbit phase, a measurement system is designed to collect and save these data, and to send them to the ground. The system is loaded on a large satellite platform and the measurement mission is completed successfully. The important and significant data, such as the sine vibration response, the random vibration response, the pyro-shock response and the micro-vibration of the in-orbit structure between the interface of SC/LV and on the satellite structure, are obtained and analyzed, and also compared with the ground test results and the SC/LV coupling analysis results. The results show that in the satellite-rocket interface, the coupling analysis is quite good in the horizontal direction and for several frequency segments in the vertical direction, but a large margin exists for other frequencies and on the satellite. Thus the design should be further optimized, including the modifying of satellite model, the tailoring of test conditions, and the design for similar satellite platform for better mechanical properties.