According to the real situation of conventional verification equipment hardly meeting the verification demand of electric energy meter based on OIML R46 international recommendation, this paper introduces a verification equipment of three phases electric energy meter. This equipment adopts modularization design which includes programmable signal source, linear power amplifier, high-precision three-phase reference energy meter and multi-functional error processing system. With the function of digital amplitude modulation, frequency modulation and phase modulation, the equipment can output sinusoidal wave, higher harmonics, square wave and peaked wave. The error calibration, function test and metering protection have been realized in the equipment. This solution has important practical significance to improve domestic traditional verification equipment.