In view of the high demand for space and equipment of automobile manual transmission,and the heavy and complex structure of the gearbox,which is not easy to display in actual operation,this paper uses Unreal Engine 4 software to build a transmission virtual simulation teaching system that integrates component introduction and training.The virtual simulation teaching can stimulate students'interest in learning,make the experimental teaching safer and more reliable,the links more controllable,and the knowledge points clearer.