Rollover is one of the main traffic accident forms for vehicle.According to the datas recently,rollover has become the second most serious accident.However,the study of rollover in China is at the beginning.The study of vehicle rollover is based on the theories of rollover.In order to optimize vehicle configuration,enhance vehicle rollover stability,and ensure the road safety,rollover models are proposed and simulated in computer.Besides,the reasons that have effect on rollover are analyzed in detail.The final result can provide a scientific basis for the optimization of the vehicle′s structure and improving the stability of vehicle rollover.