With the demand for the high performance, the vehicle handling stability is more and more attractive and becomes one main service performance of modern car. At the same time, traditional calculation method can not meet the requirement of modern automobile research on the analysis of varied performances. The virtual simulation software increases greatly and it is possible to do the vehicle simulation trial. In this paper, a vehicle model of 10-DOF is built by using the dynamics simulation software ADAMS. Through the dynamic simulation test, the vehicle handling stability is studied with emphasis when the S.M. (Static Margin) is positive,zero or negative.The result is a reference in design of the vehicle, so the purpose of saving test funds and shortening design time is achieved.