The utility model relates to a special screwdriver of maintenance that can throw light on belongs to the transformer substation and overhauls screwdriver technical field. Technical scheme is: contain screwdrivers blade (1), metal components (2), laser bulb (3), transmission line (4), button cell (5), lamp switch (6), transmission line two (7) and insulator (8), metal components (2) one end is equipped with screwdrivers blade (1), and the other end is fixed on the terminal surface of insulator (8) one end, still is equipped with laser bulb (3) on this terminal surface, be equipped with on the relative terminal surface with being equipped with laser bulb (3) lamp switch (6), laser bulb (3) are connected with button cell (5) through transmission line (4), and button cell passes through transmission line no. 2 and is connected with the lamp switch. The beneficial effects of the utility model are that: when the transformer substation salvagees night, the emergence of using the screwdriver terminal dislocation condition has greatly been reduced. Simultaneously, the outfit quantity of transformer substation's light source can also be reduced, the cost is practiced thrift.