In order to avoid the panic caused by the lack of experience when the disaster occurs, a hybrid display technology is used to design an emergency simulation application system. Bluetooth adapter is used as a tool for wireless network transmission in hardware design; In the software design, the virtual reality scene is reconstructed based on the mixed reality technology, the image is denoised, the three-dimensional coordinates of each pixel point are calculated, the position of the particle is updated in real time, the visual rendering is carried out, and the position coordinates of the particle under the rendering of the mixed reality scene and the projection distance under the line of sight of the mixed reality are obtained; Obtaining an emergency evacuation simulation result under the physical model of the simulation scene. The results show that the simulation system is practical and can complete the data collection and analysis during the emergency drill.