The invention discloses a bird nest removing device and an operating method. The bird nest removing device comprises a cutting tool arranged in the tool box. The lower part of the tool box is provided with a support rod, and the support rod is provided with mechanical arms. The cutting tool comprises a barrel housing. The lower part of the barrel housing is provided with a handle. The front part of the barrel housing is connected with an upper fixing piece and a lower fixing piece. An electric hydraulic cylinder is disposed in the barrel housing. The telescopic rod of the electric hydraulic cylinder extends out of the tiger mouth of the fixing pieces to be connected with a movable blade. The lower part of the handle is provided with a detachable tuck net. Two fixing portions are disposed on the fixing pieces up and down and form a tiger mouth shape. One end of the movable blade is rotatably arranged on one of the fixing portions. The movable blade is sandwiched between two static blades. Both ends of each static blade are fixed to the two fixing portions respectively. The bird nest removing device can easily triturate a bird nest, receives the material of the bird nest material with the tuck net, do not damage facilities near a tower, can be easily taken to the tower, and do not increase the burden of a worker.