The invention relates to the field of electric power rush-repair equipment, and in particular relates to a cable maintenance robot comprising a rush-repair adjusting plate, a rush-repair support frame, an adjusting base plate, a lower adjusting support, an adjusting cylinder, an upper adjusting support, a rush-repair female board, a hydraulic cylinder base, a hydraulic cylinder, a frame-shaped reversing frame, a wire wrapping reel, a ratchet wheel, an end wire locking device, a flexible steel cable, a gear motor, a pawl, a rush-repair male board, a rotating pin, a rush-repair gas pipe, a rush-repair air pump, a pawl support, a rush-repair bearing, a reversing pin and a pawl spring. The cable maintenance robot disclosed by the invention implements supplementary closing on a broken cable, thus being convenient for maintenance of the cable, and adopts the same air pump to drive the adjusting cylinder, thus being capable of reducing the phenomenon of secondary breaking.