The invention provides a ground wire dismounting and hanging device based on an unmanned aerial vehicle, which is connected between a
power transmission line and a ground wire, and comprises a hook which comprises a hanging part and a mounting part connected with the hanging part, the hanging part is provided with a channel for accommodating the
power transmission line, and the mounting part is connected with the ground wire; the two fixing pieces are distributed on the hanging part in a
mirror image mode, each fixing piece comprises a fixing part corresponding to the channel, an adjusting part connected with the fixing part and a mounting pin connected between the fixing part and the adjusting part, and the mounting pins are rotationally arranged on the hanging part; the adjusting parts are provided with first mounting rods, the two ends of the adjusting
rope are connected with the first mounting rods of the two adjusting parts respectively, and when the adjusting
rope is pulled by external force, the adjusting parts drive the fixing parts to rotate around the mounting pins so as to open the channel. According to the device, extra pulling force does not need to be applied to the hook, manpower consumption is reduced, a
power transmission line is prevented from being damaged, the cost of the whole device is reduced, the overall structure is simplified, and the later maintenance cost of the device is reduced.