In order to create an flight visualization simulation system in manintheloopan aircraft motion/dynamic and aerodynamic/gravity model was established to calculate flight parameters and expression of rotation quaternion in real timeand simulating module was designed based on Matlab/Simulink conditions.A　3D virtual reality space based on VRML was built up by Vrealm Builder for simulating visualization.Operating deviceflight control module and 3D virtual space were integrated into a complete simulating system by Simulink 3D Animation Blockset.Results of simulation indicate that the system can realize the flight visualization simulation with high fidelity of scene viewsupply accurate and realtime flight parameter outputand implement flight under the control instruction.The system has good maneuverabilityversatility and scalability.