An unmanned aerial vehicle system includes an unmanned aerial vehicle and a remote controller, where the unmanned aerial vehicle includes a first controller unit configured to determine whether the unmanned aerial vehicle can pair via a first communication unit with the remote controller, and when the unmanned aerial vehicle cannot pair with the remote controller, to send out via a second communication unit pairing information of the unmanned aerial vehicle and version information of a first private communication protocol of the first communication unit, and the remote controller includes a second controller unit configured to determine whether the remote controller can pair via a third communication unit with the unmanned aerial vehicle, and when the remote controller cannot pair with the unmanned aerial vehicle, to send out via a first communication interface pairing information of the remote controller and version information of a second private communication protocol of the third communication unit.