The invention provides a distribution network overhead line fault self-recovery method and system. Section switch fault information, interconnection switch fault information and outlet switch fault information in a control area are received, fault line outlet switches and two feeder automation switches the most closest to two ends of a fault position are determined according to the fault information, the two feeder automation switches the most closest to the two ends of the fault position are opened and locked according to the re-closing frequency of the fault line outlet switches, closing commands are given to different switches according to the types of the two feeder automation switches the most closest to the two ends of the fault position, and line power supply of a non-fault positionis recovered. Therefore, different re-closing frequency of different outlet switches in a line can be adapted to, isolation of the fault position is ensured, different closing commands are given according to different types of the two feeder automation switches the most closest to the two ends of the fault position, power supply recovery of the line at the non-fault position is ensured, one morepower failure caused by mistaken switching of the switches is prevented, and fault self-recovery can be more reliably realized.