Provided is an electric energy metering loop high precision data synchronous sampling device, comprising a voltage transformation mutual inductor, a current transformation mutual inductor, a first filter, a second filter, a first A/D converter, a second A/D converter, a reference module, a processing module and a constant temperature crystal oscillator. The device has a gross error within 0.0193%, and meets the high precision sampling requirement for gateway stoichiometric point secondary circuit voltage and current; in addition, in cooperation with a digital electric energy meter check meter, the device can verify a gateway electric energy meter.