A power supply control device for a communication network, the device comprising: a reverse power supply module, which is configured to detect a power supply state of a reverse power supply terminal, and transmit reverse power supply state information to a power supply control module, wherein the reverse power supply terminal is used to supply power through reverse power feed, RPF; a local power supply module (12, 13, 16), which is configured to detect a power supply state of a local power supply terminal, and transmit local power supply state information to the power supply control module, wherein the local power supply terminal is used to supply power through a local power source; a bus bar control module, which is connected to a power supply output terminal of the reverse power supply module and a power supply output terminal of the local power supply module (12, 13, 16), and is configured to detect power supply output information of the reverse power supply module and the local power supply module (12, 13, 16), transmit the power supply output information to the power supply control module, and converge outputs of the reverse power supply module and the local power supply module (12, 13, 16) to form a power supply bus bar for powering a lower-level power load; the power supply control module, which is configured to output, according to the power supply output information received from the bus bar control module, the reverse power supply state information and the local power supply state information, a control signal to the reverse power supply module and a control signal to the local power supply module (12, 13, 16), so as to adjust a magnitude of a power supply output of the reverse power supply module, a magnitude of a power supply output of the local power supply module (12, 13, 16) and a ratio between the power supply output of the reverse power supply module and the power supply output of the local power supply module (12, 13, 16). a reverse power supply module, which is configured to detect a power supply state of a reverse power supply terminal, and transmit reverse power supply state information to a power supply control module, wherein the reverse power supply terminal is used to supply power through reverse power feed, RPF; a local power supply module (12, 13, 16), which is configured to detect a power supply state of a local power supply terminal, and transmit local power supply state information to the power supply control module, wherein the local power supply terminal is used to supply power through a local power source; a bus bar control module, which is connected to a power supply output terminal of the reverse power supply module and a power supply output terminal of the local power supply module (12, 13, 16), and is configured to detect power supply output information of the reverse power supply module and the local power supply module (12, 13, 16), transmit the power supply output information to the power supply control module, and converge outputs of the reverse power supply module and the local power supply module (12, 13, 16) to form a power supply bus bar for powering a lower-level power load; the power supply control module, which is configured to output, according to the power supply output information received from the bus bar control module, the reverse power supply state information and the local power supply state information, a control signal to the reverse power supply module and a control signal to the local power supply module (12, 13, 16), so as to adjust a magnitude of a power supply output of the reverse power supply module, a magnitude of a power supply output of the local power supply module (12, 13, 16) and a ratio between the power supply output of the reverse power supply module and the power supply output of the local power supply module (12, 13, 16).