The virtual flight training system of VSIM3D.VMT.VRsim VR, which is independently developed by Chinese Imitation Intelligence, is mainly composed of iFSim® general software framework, flight simulation modeling module, virtual equipment interaction module and system control software. Based on the VR hardware platform, the system can realize VR flight with multiple types and tasks, and can choose a variety of flight tasks, including: long-endurance flight, night flight, high-altitude flight, sea flight, plateau flight and complex weather flight; The system includes joint flight software, which can realize single-machine and double-machine training through online.