Abstract: This paper is aimed at the rapidly optimal design and precise simulation requirements of servo systems for launch vehicles, and develops a generically parametric simulation platform using Matlab software. The basic model libraries of electro-hydraulic actuators, electro-hydrostatic actuators and electro-mechanical actuators are established so as to generate a simulation model of control characteristics of the servo systems quickly according to model creation and parameter configuration modules. Through the parameter design and analysis modules, the simulation analysis of the control characteristics of the servo systems is quickly carried out, and the parameter influence analysis module is used to quickly obtain the optimal design. The parametric simulation method realizes the standardization of the simulation model and simulation process, and significantly improves the efficiency and accuracy of the simulation analysis of the control characteristics of the servo systems. The engineering practice shows that the simulation analysis results are in good agreement with the test results, and thus it has an excellent prospect of engineering application.