With the weapon equipment modernization in recently years, the unmanned aerial vehicle (UAV) has been widely employed in military action. In order to increase training fidelity and immersion for the UAV operator, we should adopt new method to approach the actual battle environment. The high fidelity dynamic flight model is the foundation and core for UAV training simulator, which introduces the project design of UAV training system and the high fidelity dynamic model design method, Simulink/Aerosim toolbox was adopted to establish two typical dynamic simulation models of UAV, it can reduce the researching periods and heighten exploitation efficiency by Simulink modularization, which can improve basic researching work to establish high fidelity simulator for UAV.