The present invention discloses an electric energy meter for supporting multiple communication protocols. The electric energy meter comprises a pedestal and an upper cover; the pedestal and the upper cover integrally form a housing; a current terminal is arranged in the housing close to one side portion and is provided with a plurality of wiring holes configured to switch in external electric power wires; a circuit board is arranged in the housing and is provided with a communication circuit; the communication circuit is provided with a communication data receiving and transmitting module, a 645 protocol module and an object-oriented protocol module; the communication data receiving and transmitting module is configured to receive information data transmitted from the exterior of the electric energy meter and transmit information to the 645 protocol module or the object-oriented protocol module according to the protocol format. The electric energy meter for supporting multiple communication protocols performs communication through adoption of a 645 protocol or an object-oriented data exchange protocol, therefore the utilization rate of hardware resources is enhanced and the user satisfaction is improved.