In view of the complexity of aircraft′s electromechanical system, it is of great significance to analyze and model all kinds of faults and study their excitation method.Based on the historical data of flight tests, this paper studies the fuel system in the typical electromechanical system of an aircraft.Aiming at the specific structure and characteristics of the electromechanical system of the aircraft, the system′s simulation model is established by using Matlab/Simulink software, and simulation is designed for a variety of typical faults.Finally, a visualized simulation platform of fault excitation is built by using Simulink and VC++.The simulation results show that the platform can complete the excitation of a variety of faults in the electromechanical system, which meets the expected requirements.