The invention discloses a multi-power-source identifying device which comprises a front-end device, a tail-end device and a wireless communication device. The wireless communication device comprises a first wireless communication module and a second wireless communication module. The front-end device is arranged corresponding to a three-phase power transferring switch, wherein the three-phase power transferring switch is arranged inside a mobile base station and used for transferring power sources. The input end of a detecting module in the front-end device is respectively connected with the power output end and the commercial power input end of the three-phase power transferring switch. The output end of the detecting module is connected with a first BPL module and the first wireless communication module sequentially through a first processor and a first switching module. The second wireless communication module and a second BPL module in the tail-end device are connected with the input end of an electronic switch sequentially through a second switching module and a second processor. The first BPL module and the second BPL module are connected through a power line. The first wireless communication module and the second wireless communication module are communicated through a wireless network. According to the multi-power-source identifying device, the power line communication technology and the wireless communication technology are used for achieving power supply real-time monitoring on the power sources of a base station.