In order to solve the problem of nonstandard installation and low training efficiency in oil pumping unit，the virtual simulation system is developed which is based on virtual reality technology. Research on tower type pumping unit，using 3ds Max to create models which is required in pumping installing virtual scene and using Premiere editing animation video，using Microsoft Visual Studio to develop exam system. Finally using Unity 3D to build virtual scene and develop the virtual system of oil pumping installation．Results shows that virtual simulation system can effectively regulate the installation operation and improve the training efficiency． It shows that the virtual simulation system can overcome the boring classroom teaching and avoid security risks brought by real operation, effectively regulating the installation operation, greatly improving the efficiency. The application of virtual reality technology in equipment installation and training has a promising future.