The invention provides an intelligent power-supply control system of street lamps, comprising an intelligent control device of street lamp transformer power-supply equipment, a fiber communication circuit and an intelligent power-supply control center of the street lamps, wherein the intelligent power-supply control center of the street lamps comprises a signal processing circuit, a transformer equipment operating parameter look-up and distant operating circuit and an information display circuit; the intelligent power-supply control center of the street lamps is connected with the intelligent control device of the street lamp transformer power-supply equipment by the fiber communication circuit; the signal processing circuit of the intelligent control center has two kinds of signal processing, that is, a light receiving circuit of the fiber communication circuit outputs signals and an output end is connected with the information display circuit after the signals are processed by the signal processing circuit; and an output of the transformer equipment operating parameter look-up and distant operating circuit is connected with the signal processing circuit and then a signal output is connected with a radiating circuit of an optical transmitter and receiver after the signals are processed by the signal processing circuit. The system plays a promotion role in developing the construction of power grid intellectualization.