The utility model provides an electric energy meter data protocol converter, and relates to an electric energy meter protocol converter. The problem that a user needs to reset the communication address and the communication protocol of a background computer electrical energy meter when the electrical energy meter of a substation is replaced is solved. The electric energy meter data protocol converter provided by the utility model comprises a power supply circuit, a 485 bus interface circuit, a conversion circuit and a data storage circuit. The 485 bus interface circuit is connected with a 485 bus. The conversion signal input end of the conversion circuit is connected with the signal output end of the 485 bus interface circuit. The conversion circuit uses a single chip microcomputer to carry out corresponding conversion on a DL/T645-1997 protocol and a DL/T645-2007 protocol. The electric energy meter data protocol converter provided by the utility model is suitable for the protocol conversion of the electric energy meter.