The invention discloses an electric energy meter which can automatically test electric energy meter cell power consumption in a multi-path mode to substitute a universal meter which tests cell power consumption artificially. A current sampling port of a metering chip is parallel with a sampling resistor; a sampling signal is obtained through the sampling resistor; cell power consumption is calculated through the metering chip; the electric energy meter can automatically determine whether cell power consumption of a meter to be tested is in an abnormal state through the main chip internal program in a monitoring instrument, record the cell power consumption data in the abnormal state in real time, and store the data in an E2 memory; a warning lamp is on to give an alarm; the upper computer can perform real time monitoring, and read the cell power consumption data in the abnormal state.