Aiming at the existing practical problems in the teaching of UAV relay communication, such as limited training space and equipment and the high cost-effective training, a virtual teaching system of UAV relay communication based on VR-Platform is proposed, structure and function of which is designed. Three-dimensional modeling, scenario development, and partial system functions are implemented by using the virtual reality software platform of 3ds Max and VR-Platform. It forms the base for integration and improving of virtual teaching system of UAV relay communication.