The utility model discloses a steel pylons high altitude cat ladder linkage, including connecting piece, flying piece and fastener, the connecting piece is the steel bushing, the hole of steel bushing is the elliptical aperture with the oval principal post suit of cat ladder, and the symmetry is seted up and is supplied the cat ladder to trample the punching hole that the pole passes through on the steel bushing of elliptical aperture minor diameter direction, the flying piece is the U shaped steel board that open side down, the draw -in groove that the opening inlayed for vertical steel border checkpoint with the angle steel cross arm, the plate body welding of draw -in groove one side on the steel bushing side of elliptical aperture major diameter direction, seted up on the plate body of draw -in groove opposite side with the communicating screw hole of draw -in groove, the fastener includes the fastening bolt who closes soon with the screw hole, the fastening bolt top spin has closed lock nut. The utility model discloses the component is few, and the installation method is simple, and the high altitude construction of being convenient for hangs the cat ladder and does not stably rock, and the flexible operation is convenient, has improved operating condition, has improved work efficiency, has increased the operation security.