Bolt screwing tool

The utility model discloses a bolt screwing tool which comprises a fixing plate, a fixing block and a flat plate, the fixing plate is connected to the flat plate and used for installing a balance box, and a plurality of corresponding horizontal groove holes and vertical groove holes are formed in the flat plate. The horizontal groove holes and the vertical groove holes are located in the horizontal extension lines and the vertical extension lines of all bolt installation points of the balance box respectively, the fixing block is used for being installed on a handle of a torsion wrench, and a positioning pin is connected to the fixing block. And when the bolt is screwed, the free end of the positioning pin slides from the upper part of the horizontal slotted hole to the upper part of the corresponding vertical slotted hole. The utility model has the beneficial effects that the horizontal slotted hole and the vertical slotted hole are respectively positioned on the horizontal extension line and the vertical ex