The invention provides a power supply intelligent system of a cell (distribution room), which comprises a signal data acquisition circuit, a signal data calculation and judgment circuit, an equipment operating circuit, a fault processing method circuit, a wireless alarm transmission circuit and a wireless receiving circuit. The signal data acquisition circuit collects signal data from a cell power-supply system, and the two outputs of the signal data acquisition circuit are respectively connected with the signal data calculation and judgment circuit and the wireless alarm transmission circuit; the output of the signal data calculation and judgment circuit is respectively connected with the equipment operating circuit, the wireless alarm transmission circuit and the fault processing methodcircuit; the output of the fault processing method circuit is connected with the wireless alarm transmission circuit; the output of the equipment operating circuit is connected with the wireless alarm transmission circuit; and the wireless receiving circuit is connected with the equipment operating circuit. In the intelligent system, a computer technology, a monitoring technology, a control technology and a communication technology are used, and a system which is integrated real-time status, data inspection, protection and remote control into a whole is developed for a distribution transformer, 10kV load switch and 400V distribution system, thus playing a positive promotion role in developing intelligentized power distribution systems.