A wireless transmission assembly includes a power cord and a communication outlet. The power cord includes a plurality of plug pins, an AC wire set, a transceiver, and a signal wire. Two opposite ends of the AC wire set are respectively connected to the plug pins and a mating electronic device. Two opposite ends of the signal wire are respectively connected to the transceiver and the mating electronic device. The communication outlet includes a plurality of socket pins, a communicator, and a wireless module. The socket pins are detachably connected to the plug pins. The communicator is arranged adjacent to the socket pins and is configured to cooperate with the transceiver in a wireless signal connection for getting information about the mating electronic device. The wireless module is electrically connected to the communicator, and is configured to transmit the information from the communicator to the external electronic device.