Abstract: A certain satellite is launched with a multi-satellite and direct orbit approach. It is found that the vibration environment of a part of frequency points is significantly higher than the original design requirements on the satellite-rocket interface in the analysis of the satellite-rocket coupling. Improvement measures are necessary to deal with these changes. In order to verify the adaptability of the satellite to the vibration environment further, this paper firstly carries out the analysis of the stiffness matching and the frequency response for the frequency points beyond the requirements, identifies the potential risk and suggests the improvement measures for the identified service capsule +Y plate; then carries out the dynamic analysis of the whole satellite and the analysis of the satellite-rocket coupling, analyzes and verifies the environmental adaptability of the satellite and its components, and suggests the improved ground tests conditions. The results indicate that the ground tests can cover the analysis result of the satellite-rocket coupling, thus the tests are sufficient; at last, the flight tests indicate that the ground test response can cover the vibration environment in orbit flight, and the adopted methods of analysis verification and test verification are feasible. The research method and the conclusion in this paper can provide a certain reference for solving similar problems in the subsequent satellite development.