Considering geotechnical engineering in practice, as well as the non-perspective and complex features of the occurrence environment of rock mass, a practical teaching platform based on virtual reality and numerical simulation technology is proposed. Based on the typical geotechnical engineering structure - deep underground tunnels, the platform in teaching practice is introduced. It is shown that the proposed platform in this study enhances the traditional teaching mode. The students learn and perceive the actual engineering structure in a safe and virtual environment easily. The students’ interest in learning is stimulated, their practical ability and creative thinking ability are trained. The students’ capacity solved the practical engineering problems in the real environment is improved.