The invention relates to an electric energy meter upgrading method. The method includes: allowing an electric energy meter to receive and store identity authentication information of a master station before upgrading of the electric energy meter, and subjecting the master station to identity authentication; judging whether identity authentication succeeds or not, if yes, receiving upgrading request data sent by the master station, and comparing the upgrading request data with identification information stored in the electric energy meter to acquire comparison results; judging whether the comparison results are uniform or not, if yes, allowing an upgrading request to pass, receiving the upgrading data sent by the master station, and executing upgrading operations. The electric energy meter upgrading method has advantages that upgrading efficiency of the electric energy meter is improved, upgrading cost is reduced, and waste of manpower and material resources is avoided.