Abstract: The mechanic axles and electric driving axles of mechanic and electric compound driving vehicle can drive vehicle independently or simultaneously, which can improve the dynamical performance, fuel economy and driving reliability of vehicle. The simulation models of mechanic and electric compound driving components and dual axles vehicle were built based on GT-SUITE software. The bench test and simulation results of power unit and electric driving axle dynamic shifting were compared. Max speed and accelerate performance of the vehicle were simulated, verifying the correctness of the model.