Novel box edge correcting tool

The utility model discloses a novel box edge correcting tool the structure of which is as follows: a hydraulic cylinder is laid flatly; a piston rod of the hydraulic cylinder is linked with a dragging plate; the vertical section of the dragging plate is fixedly connected with a sleeve; the sleeve is sheathed on a guiding rod; the other end of the guiding rod is linked with a threaded sleeve by threads; the threaded sleeve, a vertical clamping plate and a cross clamping plate are fixedly connected; the dragging plate comprises the vertical section and a horizontal section; a screw rod and a screw rod casing are arranged at the end of the horizontal section of the dragging plate; and the screw rod is hung on a box edge bolt hole. The novel box edge correcting tool is simple in structure, is easy to operate, is convenient and saves labor, and enables a barrel type transformer oil box to be safe, high-quality and efficient.