An unmanned aerial vehicle silver thaw clearing system comprises an unmanned aerial vehicle, a suspension device, a driving device, a clearing device, a balancing block and a control device; the unmanned aerial vehicle comprises a tail, a landing gear, a cabin, an unmanned aerial vehicle body and rotors; the suspension device is mounted on the tail through a suspension plate; the driving device ismounted under the suspension device through a connecting plate; the clearing device is mounted under the driving device through a rotating platform; the balancing block is mounted on the landing gearof the unmanned aerial vehicle; and the control device is mounted in the cabin of the unmanned aerial vehicle. According to the unmanned aerial vehicle silver thaw clearing system, deicing personnelcan be enabled to stand in a safe distance to remotely control the unmanned aerial vehicle to fly to silver thaws under the roof; and by using the clearing device, the silver thaws at the high attitude can be continuously and efficiently cleared.