The invention relates to a high-altitude operation bolt anti-rotating device, comprising a support, a bolt connecting portion and a nut connecting portion arranged at the two ends of the support. Thenut connecting portion comprises: a connecting rod, a first sleeve wrench fixedly arranged at one end of the connecting rod; a second sleeve wrench and a third sleeve wrench arranged on the connectingrod and sleeved on the outer side of the first sleeve wrench; and a baffle arranged on the connecting rod. A compression spring is arranged between the baffle and the third sleeve wrench, and tensionsprings are arranged both between the first sleeve wrench and the second sleeve wrench and between the second sleeve wrench and the third sleeve wrench. According to the high-altitude operation boltanti-rotating device, the two connecting portions are connected by the support. The nut is clamped by the nut connecting portion to prevent the rotation thereof, and the bolt is rotated by the bolt connecting portion to remove the bolt and nut. The two ends of the high-altitude operation bolt anti-rotating device are fixed during the disassembly process, which can effectively prevent the simultaneous rotation of the bolts and nuts, and facilitate the smooth removal.