对不同的x3d播放器，x3d虚拟现实系统的构建方法就会有所不同。在众多x3d播放器中，BS Contact播放器对x3d场景的渲染效果良好，并提供强大的编程接口控制x3d场景。本文以BS Contact作为x3d播放器展开讲述构建x3d场景的相关技术，使用一个简单的实例详细讲解使用BS Contact播放器时X3d场景的交互方式。

The method of constructing a x3d virtual reality system will be different when using different X3d players．Among of many x3d players，BS Contact Player is good at rendering the x3d scene，and it provides a powerful application programming interface to control the x3d scene．In this paper，BS Contact is used as x3d player to build x3d scene．An example is also given for explaining x3d interaction technology in detail．