The utility model relates to the technical field of distribution automation test, in particular to a feeder terminal power supply management system, which specifically comprises a rectifying circuit,a backup power supply management circuit, a backup power supply, a wide-range DC/DC module, a first energy storage circuit, a second energy storage circuit, a third energy storage circuit and a fourthenergy storage circuit, an isolation DC/DC module and a linear voltage stabilizing circuit; according to the utility model, the wide-range DC/DC voltage stabilizing module is connected to the rear stage of the DC output of the backup power supply to stabilize the remote signaling of the feeder terminal and the power supply voltage of the remote control module. Meanwhile, the remote signaling module and the remote control module of the feeder terminal are respectively provided with an energy storage circuit, thereby preventing the feeder terminal from working abnormally in an undervoltage anddamaged state of the backup power supply.