The invention discloses an unmanned aerial vehicle searching system. The unmanned aerial vehicle searching system is installed on an unmanned aerial vehicle to allow the unmanned aerial vehicle searching system itself to perform networking and communication with searching systems of other unmanned aerial vehicles, different information communication is performed according to the different workingmodes of the searching system carried on the unmanned aerial vehicle to achieve the purposes of active searching and passive searching and assist searchers to rapidly locate the position of a lost unmanned aerial vehicle and get back the lost unmanned aerial vehicle. The searching system is wide in covered searching range and is not easy to be shielded by obstacles to greatly increase the probability of getting back the lost unmanned aerial vehicle, is low in cost and is easy to be widely used.