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This paper studies the application of virtual simulation technology in coal mine, and proposes threedimensional virtual simulation training system for coal mines. This system mainly includes “finger oral” and reduction of accident cases. This paper describes the characteristics and development process of three-dimensional virtual simulation training system which can achieve three-dimensional visual effects combining three-dimensional stereoscopic projection technology. The field application shows that three-dimensional virtual simulation training system developed in this paper has achieved better training affects, greatly improved the quality of coal mine safety training and enhanced the enthusiasm of employee, and promoted the safe production of coal mine. Few patents associated with virtual simulation are discussed in this paper.