The utility model relates to a photovoltaic generating electric energy metering system for low-voltage users. The system comprises a photovoltaic array, a DC combiner device, a DC electric energy meter, an AC electric energy meter, an electric energy consumption information acquisition device and a control computer. When an output of a grid-connected inverter is larger than requirements of a user load, unnecessary electric quantity output by the grid-connected inverter is recorded as reserve electric quantity by the AC electric energy meter; when the output of the grid-connected inverter is less than the requirements of the user load, an insufficient user load is extracted from a power supply low-voltage bus via the AC electric energy meter and recorded as positive electric quantity by the AC electric energy meter; and DC electric energy data is compared with reserve AC electric energy data, and electric energy consumption inspectors are reminded to inspect electric stealing events, which are suspected for defrauding photovoltaic generating subsidy, timely when abnormal conditions happen.