The existing investigations of vehicle ride comfort mainly include motion characteristics analysis based on creating a multi-body dynamic simulation model,and the parameters analysis to improve the suspension control for the target.In the study of creating multi-body dynamics simulation models,there is usually without considering calibration and test verification,which make it difficult to ensure the production of engineering.In the study of improving the suspension control parameters for the target,there is a lack of systematic match about comfortable and human characteristics,so it is difficult to implement in the field of driving and leading the vehicle design.In this paper,based on the different characteristic of suspension system that effects on the vehicle ride comfort, according to the suspension system dynamic mechanism,the research methods of vehicle road test,bench test and CAE simulation is used,at the same time,several sensitivity analysis of vehicle ride comfort related to suspension stiffness and damping and speed is made. As a result,the key suspension systematic parameters are given that have important impact on vehicle ride comfort.Through matching parameters,a calibration analysis of suspension system based on human comfort is obtained.The analysis results show that the analysis methods for the design target of making the vehicle with best comfort are effective.On the basis of the theory study,five suspension parameter matching principles are explored to promise the vehicle with perfect ride comfort,which also provide theoretical basis and design methods for the passenger car best match of suspension system stiffness and damping.The research results have the promotional value of practicability and a wide range of engineering application. The existing investigations of vehicle ride comfort primarily include motion characteristics analysis based on creating a multi-body dynamic simulation model, and the parameters analysis to improve the suspension control for the target. In the study of creating multi-body dynamics simulation models, there is usually without considering calibration and test verification, which make it difficult to ensure the production of engineering. the study of improving the suspension control parameters for the target, there is a lack of systematic match about comfortable and human characteristics, so it is difficult to implement in the field of driving and leading the vehicle design.In this paper, based on the different characteristic of suspension system that effects on the vehicle ride comfort, according to the suspension system dynamic mechanism, the research methods of vehicle road test, bench test and CAE simulation is used, at the same time, several sensitivity analysis of vehicle ride comfort related to suspension stiffness and damping and speed is made. As a result, the key suspension systematic parameters are given that have important impact on vehicle ride comfort. Through matching parameters, a calibration analysis of suspension system based on human comfort is. The analysis results show that the analysis methods for the design target of making the vehicle with best comfort are effective. On the basis of the theory study, Fifth suspension parameter matching principles are explored to promise the vehicle with perfect ride comfort, which also provide theoretical basis and design methods for the passenger car best match of suspension system stiffness and damping. the research results have the promotional value of practicability and a wide range of engineering application.