The invention provides an extra-high voltage line live working strain tower drainage wire climbing stirrup, which comprises a cross beam for a climber to tread on. A pair of stirrup devices used for being clamped and fixed to a jumper wire is symmetrically arranged at the two ends of the cross beam. Each stirrup device comprises a first arc-shaped clamp body hinged to the cross beam and located atthe top and a second arc-shaped clamp body hinged to the cross beam and located at the bottom. A closed clamping space is formed in the middle after each first arc-shaped clamp body and the corresponding second arc-shaped clamp body are clamped. An arc-shaped clamping groove is formed in the lower portion of each second arc-shaped clamp body, an arc-shaped handle is hinged to the upper portion ofeach first arc-shaped clamp body, and an arc-shaped buckle ring clamped and fixed to the arc-shaped buckle is hinged to the arc-shaped handle. The climbing stirrup is reasonable in design, simple instructure, convenient to use, convenient to disassemble and assemble and convenient to carry. A climber can smoothly climb the jumper wire to enter a wire operation position by means of supporting ofthe climbing stirrup. Time and labor are saved, and the operation difficulty is reduced. The climbing stirrup is practical and innovative.