Abstract: To solve the problems of complication and reproduction of making training devices and huge cost of human and material resources in the explosive devices exclude training process,the paper designed an explosive devices exclude virtual simulation training system．The divisions of system hierarchical structure and the hardware architecture were designed based on the virtual reality technology,and the modular design of the system was based on object-oriented thin-king．The paper designed the explosive devices exclude tool module according to the design pattern of simple factory and template method．It solves the collision detection between the device nodes with Open Dynamic Engine (ODE),virtual hand grab objects with the Open Scene Graph (OSG)intersects testing and matrix transformations and the judgment of device excluding correctness key technology．And it implements the explosive devices exclude virtual simulation training system under the VC++ development environment．Practice proves that the system has high degree of simulation,reaches the effect of the explosive device exclude simulation training．And it is easy to operate with a strong scalability.

Key words: Virtual reality,Visual simulation,Explosive devices disposal training,Virtual hand crawl