The invention discloses a live working wire lifter, and belongs to a lifting device. The live working wire lifter structurally comprises two hoops and two sets of lifters, wherein the two hoops are an upper hoop body and a lower hoop body respectively; the upper hoop body and the lower hoop body are fixed to a pole through fixed bolts separately; each set of lifter comprises an upper insulating support rod, a lower insulating support rod, a connection device, a guide wheel, a lifting wheel, a lifting hook and an insulating lifting rope; each upper insulating support rod is suspended on the fixed bolt on the upper hoop body through an upper hook body and is connected with the upper hoop body; and each lower insulating support rod is suspended on the fixed bolt on the lower hoop body through a lower hook body and is connected with the lower hoop body. The live working wire lifter has the characteristics that the structure is relatively light; quick lifting of a wire is achieved; the station transfer and operation steps of operating personnel are reduced; the workload is reduced; the live working efficiency is improved; the work can be finished by only one person; and both time and labor are saved.