Abstract: Based on the dynamic simulation theory of mechanical system, a new method that integrated computer aided design(CAD), finite elements analysis(FEA)and mechanic system simulation(MSS)technology was presented. A two-way model data exchange between ANSYS and ADAMS was established to under Adams environment, and dynamic analysis of the virtual prototype of a high speed cigarette-cutting support system was carried out and the parameters responded by the model were highly agreed with the test data.