IPTCNFSimulator.C91IPT, a program trainer for domestic large aircraft C919, is a flight training equipment independently developed by China Imitation Intelligence for domestic large aircraft C919. It adopts advanced flight control software, graphic image system and electromechanical integration system of China Imitation Technology, and combines professional aviation training knowledge to realize high-precision flight simulation of C919 aircraft. Simulator can be used to learn the knowledge of aircraft cockpit, the knowledge of popular science of flight simulation, and the operation mode of flight simulator. At the same time, it also supports learning the knowledge of instrument flight (IFR) and visual flight (VFR), which can be used in scientific research and teaching.