介绍了虚拟现实技术的特点、含义、应用领域及其目前所面临的关键技术；并进一步阐述了实时三维图像生成与显示技术，自然交互跟踪和输入技术，环境渲染中的多媒体技术，以及数据压缩与人机接口等方面的主要内容；对数据手套、头盔系统等虚拟现实技术的主要硬件设备也作了相应的介绍。论述了虚拟现实技术在飞航导弹研制，特别是在飞航导弹系统仿真中的作用及意义。最后，就我国虚拟现实技术的研究提出了几点建议。 The characteristics, meanings, application fields and key technologies of virtual reality technology are introduced. The technologies of real-time three-dimensional image generation and display, natural interaction tracking and input technology, multimedia technology in environment rendering, and data compression And human-machine interface, etc. The main hardware devices of virtual reality technology such as data glove and helmet system are also introduced correspondingly. Discusses the virtual reality technology in the development of the missile, especially in the flight missile system simulation and its significance. Finally, some suggestions are put forward on the research of our country’s virtual reality technology.