Abstract: This article took the EMU bogie as the object of study, created a 3D virtual interactive environment based on Unity3D engine development platform, used the database technology to store and manage system data, implemented virtual disassembly and assembly process of bogie with the iTween class method in the NGUI plug-in, designed and developed the virtual disassembling and assembly training system of EMU bogie. The system had the characteristics in real training scene and operation instructions, not limited by time and place, interactive and obvious training effect. The system also made up for the shortcomings of the traditional teaching and training, it is of great significance to reduce teaching costs and improve learning efficiency.