Abstract: Aiming at the problems of underground production efficiency reduction and personal safety under threat caused by inadequate and untimely perception of hazard sources in underground stope after blasting. This paper designs a test platform of environment perception of stope after blasting based on mixed reality. The test platform is based on HoloLens mixed reality device,supported by monitoring data from various sensors in the stope,combined with intelligent algorithms for stope safety evaluation and remote control technology for mining equipment,build a mixed reality environment with Unity3D development engine,realize the functions of environmental perception of stope after blasting, mine information transparency, remote expert guidance and dangerous scene restoration. Taking Northeastern University′s tunnel simulation training base as the background, by simulating the environment of stope after blasting artificially in the training base,the functions of each part of the test platform were tested. The test results show that the platform perceives and controls the mining environment effectively,and provides a technical guarantee for the safety of underground operations.