The utility model discloses a dedicated maintenance instrument of two division line clamp of dismouting belongs to electric power system transformer technical field. It includes clamping element, afterburning component and safety element, its characterized in that: clamping element comprises splint I (1) and splint II (2), splint II (2) are connected to on the L type splint I (1) through square notch (10), I (1) square welding above that on the splint has one nut (4), the welding is gone up to splint II (2) has one screw rod cover (3), screw rod (5) are connected to in screw rod cover (3) of splint II (2) after passing nut (4) of splint I (1), there is not the screw thread in the part of screw rod (5) connection in screw rod cover (3), screw rod cover (3) both sides are equipped with anticreep screw (7), safety catch and safety belt are laid respectively in two through -hole (9) at I (1) back on the splint. The utility model discloses can improve two division line clamp and demolish and adorn compound work efficiency, can reduce the intensity of labour of maintainer, optimize artifical machine and imitate.