The paper introduces classification and characteristics of virtual reality and its requirement for interactive technology. It describes in detail VR development environment based on SGI OCTANE workstation, and gives some examples of VR application in naval combat system DIS. 介绍了虚拟实现系统的分类特点及其对相关技术的要求,详细描述了基于SGIOCTANE工作站的VR开发环境,给出了VR在舰船作战系统分布交互式仿真中的应用实例。