Virtual Reality has become more and more eye-catching with the development of computer technology in recent years and has become one of the hot technologies. As an important branch of virtual reality, Virtual Campus provides a new way to browse the campus. It uses advanced equipment to simulate the scenes on campus through computer, and gives users a new browsing experience, allowing users to interact with the Internet through the Internet. This article takes the North China Institute of Technology as an example, through SketchUp, Unity3D In a combined way, the development and design of a three-dimensional virtual campus is carried out. A virtual campus system for human-computer interaction in North China Institute of Science and Technology was realized.