本文通过虚拟校园漫游系统的实现，论述了建筑物的三维建模及相关技术特点并进行了漫游的碰撞检测。文中给出的虚拟现实系统有较好的沉浸感，能满足用户对校园场景虚拟游览的需要。同时，本文中采用的一些方法对正在实施数字化城市，数字化校园的研究也有一定的借鉴作用。-In this paper, the realization of the virtual campus navigation system, discussed the building and related technical characteristics of three-dimensional modeling and collision detection for roaming. In this paper, virtual reality immersion system better able to meet the users on the campus scene virtual tour needs. Meanwhile, some of the methods used in this article are implemented on the Digital City, Digital Research Campus has some of reference.