An embodiment of the present application relate to the technical field of an unmanned aerial vehicle, in particular to an unmanned aerial vehicle and a pairing method and system thereof. The method includes establishing a master pairing relationship between a master controller and an unmanned aerial vehicle via pairing information transmitted by the master controller; receiving a slave pairing request forwarded by the master controller, generating temporary pairing information, and transmitting the temporary pairing information to the master controller, and transmitting the slave pairing request to the master controller; acquiring the temporary pairing information transmitted by the slave controller after the master controller transmits the temporary pairing information to the slave controller, and establishing a slave pairing relationship between the slave controller and the unmanned aerial vehicle according to the temporary pairing information transmitted by the slave controller.