The utility model belongs to the technical field of an electricity system and particularly relates to a tool for removing a fault-positioning instrument in an electrified situation. The tool is characterized by including a fixed clamp, a movable clamp, a locking mechanism and an insulation rod. The fixed clamp consists of a toothed rod, a left pressing rod and a right pressing rod. The left pressing rod and the right pressing rod are fixed on a front surface of an upper end of the toothed rod, wherein a maximum distance between the left pressing rod and the right pressing rod is smaller than a diameter of an upper end surface of the fault-positioning instrument. The movable rod consists of a supporting ring and a sliding sleeve. The supporting ring is fixedly connected to a front surface of a lower end of the sliding sleeve. The diameter of an inner hole of the supporting ring is less than a maximum diameter of the fault-positioning instrument. The supporting ring is arranged under the left pressing rod and the right pressing rod. A toothed rod through hole is vertically arranged in the sliding sleeve. A lower end of the toothed rod passes through the toothed rod through hole in the sliding sleeve. The locking mechanism is arranged between the fixed clamp and the locking clamp. The sliding sleeve is fixed to an upper end of the insulation rod. By means of the tool, a fault-positioning instrument can be removed in the electrified situation.