A　three-dimensional　model　of　the　car　has　been　established　with　SolidWorks　to　solve　the　inconvenience　of　using　special　software　of　vehicle　simulation　analysis,　and　has　been　imported　into　Simulink.　After　that,　a　16-DOF　car　dynamics　model　has　been　established,　and　the　angle　step　input　response　has　been　analyzed.　This　analysis　process　avoided　complicated　formula,　and　provided　basis　for　the　realization　of　complex　control　strategy.　©　2011　IEEE.