Safety protection fence for high-voltage line iron tower

A safety protection fence for a high-voltage wire iron tower relates to the field of power transformation operation and maintenance and comprises a fixing ring, a bottom ring is arranged on the fixing ring, at least three chain rings are mounted on the fixing ring and the bottom ring, a first air bag is mounted on the fixing ring, a spring-shaped spring ring is arranged on the bottom ring, and a top ring is arranged on the spring ring. Gaps between the spring rings are reduced through stress compression of the spring rings, so that when irrelevant personnel climb a handrail near a tower, feet and hands have no place to exert force, the irrelevant personnel cannot climb, the first air bag is pressed to inflate the second air bag to enable the second air bag to expand to push the second air bag to move upwards in the vertical barrel to increase the height of the vertical barrel, and the climbing safety is improved. Irrelevant personnel can be prevented from climbing over and climbing the railing in multiple dir