Slider and slide fastener

The utility model discloses a puller, which comprises a puller body, a zipper tooth groove and a zipper tooth groove, one end of the horse hook is rotationally connected with the head, so that a hook part at the other end can rotationally enter the zipper tooth groove; the elastic piece is arranged between the head and the horse hook so as to prevent the horse hook from rotating in the direction that the hook part is separated from the zipper tooth groove; the sliding piece is in sliding connection with the head, a pushing rod is arranged on the sliding piece, and the pushing rod abuts against the inclined face of the side, close to the zipper tooth groove, of the horse hook so that when the sliding piece slides, the horse hook can be pushed to rotate in the direction away from the zipper tooth groove. One end of the horse hook serves as a hinged end to be connected with the head, the other end of the horse hook serves as a hook part, the length of the whole horse hook can be effectively shortened, and then t