The utility model discloses a special tool for re-guiding. The special tool comprises an adjustable bracket, a tightener, a steel wire rope, a screw hole protection gasket and a perforation positioning support, the adjustable support is of a herringbone structure capable of being opened and closed. the tightener is mounted on the adjustable bracket; through holes for the steel wire rope to penetrate through are formed in the axes of the screw hole protection gasket and the perforation positioning support; the perforation positioning support comprises a conical part, a small cylindrical part and a large cylindrical part which are connected in sequence; the major diameter of the conical part is equal to the diameter of the small cylindrical part; the two are both smaller than the diameter ofa screw hole of the lead-side wiring board. One end of the steel wire rope is connected to the tightener, and the other end of the steel wire rope sequentially penetrates through the screw hole of the equipment side wiring board, the through hole of the screw hole protection gasket, the screw hole of the wire side wiring board and the through hole of the perforation positioning support and then is connected with the large cylindrical part of the perforation positioning support. According to the utility model, the difficult problem of repeated hole alignment is solved, the working efficiency is greatly improved, and meanwhile, the operation risk is reduced.