The utility model discloses a crawling ladder for high altitude operation. The crawling ladder comprises a long ladder portion and a short ladder portion. The upper ends of the long ladder portion and the short ladder portion are integrally combined through a connection ladder portion. The long ladder portion and the short ladder portion are parallel, a through hole matched with a screw is formed in the middle of the short ladder portion, the screw penetrates the through hole to be vertically connected with a center portion of a top plate, and the screw rotates to drive the top plate to move leftwards and rightwards. The crawling ladder has the advantages of adopting the short ladder portion and the top plate to clamp the wall edge of a building and adopting bolts to conduct fastening and effectively ensuring personal safety of constructors in the high altitude operation process. Especially the long ladder portion is close to a wall body to form the crawling ladder, the constructors can conduct high altitude operation conveniently, safety belt hanging of the constructors is facilitated, and operation safety of the constructors is further guaranteed.