Virtual reality technology is an important direction of simulation technology. It is the combination of simulation technology and computer graphics, human-computer interface technology, multimedia technology, sensor technology, network technology, and other technologies. It is a challenging interdisciplinary technology frontier research area. Virtual reality technology (VR) mainly includes simulation environment, perception, natural skills and sensing equipment. Simulation environment is generated by computer, real-time and dynamic three-dimensional realistic images. Perception means that the ideal VR should have the perception of all people. In addition to the visual perception generated by computer graphics technology, there are also auditory, tactile, force, motion perception, and even includes smell and taste, also known as multi-perception. Natural skills refer to the human head rotation, eyes, gestures, or other human action, by the computer to process the movement of participants to adapt to the data, and the user input to respond in real time, and feedback to the user's five senses. Sensing devices are three-dimensional interactive devices.