A communication power supply system, wherein the communication power supply system comprises an alternating current power distribution module, a rectifier module, a monitoring module, a direct current power distribution module, and a signal-driven collection board; the signal-driven collection board comprises at least one access port, the signal-driven collection board is connected to the direct current power distribution module through a plug-in connection to the at least one access port, and the signal-driven collection board is connected to the monitoring module so that the direct current power distribution module is connected to the monitoring module through the signal-driven collection board, and the direct current power distribution module is connected to the rectifier module through a plug-in connection to a power busbar, the rectifier module is connected to the alternating current power distribution module, and the rectifier module is configured to rectify an alternating current output by the alternating current power distribution module and to output a direct current to the monitoring module, to the signal-driven collection board through the monitoring module, and to the direct current power distribution module; and the monitoring module is configured to obtain a current detection signal of the direct current power distribution module through the signal-driven collection board, wherein the current detection signal indicates an information about a load connected to the direct current power distribution module or information about the direct current power distribution module; and wherein the monitoring module is further configured to send a control signal to the direct current power distribution module through the signal-driven collection board, wherein the control signal is used to control closing or opening of a circuit in the direct current power distribution module. the signal-driven collection board comprises at least one access port, the signal-driven collection board is connected to the direct current power distribution module through a plug-in connection to the at least one access port, and the signal-driven collection board is connected to the monitoring module so that the direct current power distribution module is connected to the monitoring module through the signal-driven collection board, and the direct current power distribution module is connected to the rectifier module through a plug-in connection to a power busbar, the rectifier module is connected to the alternating current power distribution module, and the rectifier module is configured to rectify an alternating current output by the alternating current power distribution module and to output a direct current to the monitoring module, to the signal-driven collection board through the monitoring module, and to the direct current power distribution module; and the monitoring module is configured to obtain a current detection signal of the direct current power distribution module through the signal-driven collection board, wherein the current detection signal indicates an information about a load connected to the direct current power distribution module or information about the direct current power distribution module; and wherein the monitoring module is further configured to send a control signal to the direct current power distribution module through the signal-driven collection board, wherein the control signal is used to control closing or opening of a circuit in the direct current power distribution module.