An identification apparatus for backup-type power supply systems aims to be used on a backup-type power supply system which includes real power supply devices and dummy power supply devices to form a N+1 architecture to output power. It has signal generation means located on the real power supply devices and dummy power supply devices to generate real identification signals and dummy identification signals of different potentials and a signal detection means to receive the identification signals to identify the real power supply devices and dummy power supply devices. Thereby operators can clearly understand coupling and installation conditions of the power supply devices of the backup-type power supply system to perform power risk management.