For the purpose of developing virtual CA6132 lathe teaching software, adopted the virtual simulation method, a lathe teaching system software with virtual reality features is developed. The general process of virtual lathe development is put forward, the facade segmentation technique for correcting images is described, the virtual Lathe Simulation System based on Unity3D engine software is developed, the basic principles of virtual reality are explained, the three-dimensional model of CA6132 lathe is established, the lathe cutting simulation method is put forward under Unity3D engine software, the virtual reality Lathe Simulation System based on virtual reality equipment zSpace has been developed, and a more natural way of scene interaction in virtual reality is proposed. The simulation results show that the virtual reality teaching system of lathe has sound teaching effect, and reduced risk of actual lathe operation.