A electromagnetic power-split (EMPS) hybrid electric vehicle was designed. This system with dual-rotor brush motor could be used to modulate the engine power flow, also can be used as electromagnetic clutch and CVT. The system configuration, working principle, the vehicle control mode and etc were analyzed. The control mode was tested under the NEDC based on the vehicle simulation platform. The dynamic and economic performances of the EMPS HEV were analyzed. The results noted that the designed vehicle control mode of the EMPS HEV worked properly under different cycles. The results also noted that the time from 0 km/h to 100 km/h was 12 s and climbing grade was bigger than 17°, these values were all satisfied with vehicle dynamic target. The average fuel consumption under the NEDC was 4.75 L/(100 km), the fuel can be saved was 41.3% compared with the related conventional vehicle. 