In the special instrument designed software and Vega instrument tools for instrument modeling of the flight visual simulation, there are disadvantages in development cost, display effect and system scalability. In light of that, a simulation method for complex instrument model based on Multigen Creator & Vega was researched. A general modularized functional structure of the visual simulation flight system was presented, and the key technologies which were used for developing the system were given too. Among the key technologies, the method of designing and driving instrument model with Creator and programming the Visual driver based on Vega was shown. Also the code was attached. The principle of achieving the movement of flight model and the precise display of the instrument modules were proposed. The system can simulate the real-life interactive flight, providing a generic simulation platform.