Augmented Reality (AR) is a technology based on real-time computing and multi-sensor fusion. It can superimpose virtual information data, including text, images, videos and 3D models, on the real world. There is now some confusion about the concepts of AR and MR. In theory, the display screen of AR is only a simple superposition of virtual information and real things, while MR can realize the interaction between the virtual and the real world and information acquisition. However, when it comes to actual terminal products, some AR terminal equipment producers have integrated MR functions into their products, but they have not yet realized real feedback and real-time accurate interaction, which are the functions of ideal MR.