The utility model relates to a real load test system of electric energy meter, including the host computer, host computer and centralized control board both -way communication, the centralized control board respectively with be used for single -phasely being examined single -phase error test device that the electric energy meter carries out error test, being used for being examined the three -phase error test device both -way communication that the electric energy meter carries out error test to the three -phase, the centralized control board is to single -phase error test device and the power supply of three -phase error test device. The utility model discloses can adopt the true load of the on -the -spot power consumption of simulation, the metering error of test ammeter under the actual power consumption condition, the utility model discloses the actual load curve of ammeter operation can be exported, properer operation measurement condition of more accurately understanding and grasping the electric energy meter is helped, the utility model discloses under true load conditions, copy the accuse ware through outside carrier wave to test the electric power carrier wave communication ability that is detected the electric energy meter, more can the real environment that reacts user field.