A cross arm insurance wire lifting ladder belongs to the technical field of power transmission and distribution engineering. A ladder body has a U-shaped hanging ring, is hung on a lead cross arm through a hand-pulled inverse chain, and is tied with a safety rope. Wire lifting hooks are provided at a lower part of the ladder body and can hang the leads. When a worker is on lines to carry out examination and repair, the worker can travel to and fro between the cross arm and the leads while crossing an insulator chain without treading and climbing insulators, so that line examination and repair is safe and high-efficiency, labour intensity is low, and the insulators are free from being contaminated. The cross arm insurance wire lifting ladder is used for power transmission line examination and repair.