Spine operation drag hook

The utility model discloses a spinal operation drag hook, which is applied to the field of spinal operation drag hooks and comprises an expansion support, a moving block is arranged in the expansion support, the front side of the moving block is fixedly connected with a positioning screw rod, and the back side of the moving block is fixedly connected with a drag hook I; the movable block connected with the first drag hook and the positioning screw rod is arranged in the expansion support, the movable block can slide in the expansion support, and the positioning nut and the positioning screw rod are arranged to be locked in a rotating mode and make contact with the expansion support to position the first drag hook and the movable block. The distance between the drag hook I and the drag hook II can be adjusted, so that the requirement of expansion of different widths of a knife edge is met; the U-shaped plate is fixed with an operating bed through the clamping plate and the clamping bolt, and the position of th