This work is based on the campus of Tianjin University of Technology. It uses 3D reconstruction technology to build its 3D virtual scene. Then, use the Unreal Engine Unreal Engine to use blueprints, mixed spaces, animation montages, etc. to realize the three roaming modes of characters, vehicles and helicopters. Allowing visitors to experience the roaming campus realized by virtual reality technology. Promote campus culture in a unique way and increase campus awareness.