The invention discloses a photovoltaic energy storage and power supply intelligent terminal system of an agricultural drainage transformer. The system comprises a dual-power automatic switching device, two power supplies which are respectively connected to an electric energy input port of the dual-power automatic switching device, an electric energy output line which is electrically connected to an electric energy output port of the dual-power automatic switching device, and an electric energy meter connected to the electric energy output line. The two power supplies are respectively a photovoltaic power supply system and a power distribution network power supply system. the operation of power distribution equipment without power on a line is reduced, the no-load loss of the equipment is reduced, the power supply reliability of the line is improved, and the complaint risks and severe weather accident risks caused by frequent power failure are prevented; no matter the power distributionnetwork is electrified or powered off, 24-hour uninterrupted on-line monitoring of electric meter data can be realized.