Abstract:The campus virtual roaming system is the important content of the university information system development strategy, the virtual roaming system is applied in every field of our lives. Take a college as virtual space, the system based on Unity3D platform is constructed by using 3Dmax to build the scene, taking JavaScript and C# as the programming tool to implement the function of interaction. Through the integration with html, the virtual campus is established. This system has three-dimensional navigation function and good interactive experience. It is convenient for consumers to require information about the college. Through this experiment, it is proved unity3d is a very useful tool for designing a virtual platform.