The utility model discloses a wire cut electrical discharge machining bed electrode silk correcting unit, establish the mount pad of cavity in including, its characterized in that is equipped with the battery in the cavity, be equipped with the insulating cover of plug and two insulating covers of gauge head on the mount pad, be equipped with the tie in the insulating cover of plug, the one end of tie and battery one extremely continuous, all be equipped with the metal gauge head of taking vertical detection plane in the insulating cover of gauge head, vertical detection plane that two gold medals belong to the gauge head is in the longitudinal overlap, two gold medals belong to the gauge head and link to each other with respective pilot lamp, it is extremely continuous with another of battery again after two sets of metal gauge heads and pilot lamp are parallelly connected, the utility model discloses the straightness that hangs down of accurate detection electrode silk of ability and workstation to improve detection efficiency, thereby guarantee processingquality, have the correction of spark formula simultaneously again concurrently and rectify two kinds of functions with photoelectricity, be favorable to production supporting, to meet customer needs.