For　a　long　time,　when　dealing　with　train　simulation,　it　is　often　limited　to　numerical　simulation　so　that　the　process　is　invisible.　Meanwhile　the　method　of　that　is　too　complicated　to　use　for　general　or　nonprofessional　purpose.　For　the　above　reasons,　in　this　paper　we　introduce　more　visualization　into　train　simulation　which　could　give　users　a　better　experience,　that　is,　we　present　a　set　of　convenient　method　to　control　motion　of　train　running,　including　the　conversion　of　railway＇s　construction　data,　the　calculation　and　optimization　of　coordinate　and　rotation　as　well　as　using　dynamical　method　to　handle　user＇s　driving　input.　According　to　the　practical　situation　of　some　requirements,　the　method　presented　by　this　paper　makes　the　accuracy　and　efficiency　balanced.　Moreover,　our　method　is　well　adaptable:　when　requiring　adjustment,　we　can　easily　recalculate　the　new　railway　track　data　in　off-line　to　make　update.　©　2010　Binary　Information　Press.