Abstract: A zipper structure for a seat slide rail capable of preventing foreign matters comprises an upper rail and a lower rail; the upper rail and the lower rail are in sliding fit; zipper heads movably connected to the upper rail are respectively arranged at the two ends of the upper rail; two sets of dustproof rubber covers are fixedly arranged at the upper end of the lower rail; the two sets of dustproof rubber covers are respectively arranged on the two sides of the lower rail; a sewn elastic cloth is arranged between the dustproof rubber covers and the lower rail; one side of the sewn elastic cloth is fixedly connected to the dustproof rubber covers, and zipper racks are arranged on the other side of the sewn elastic cloth; the two sets of zipper racks are respectively communicated with the zipper heads; and when the zipper heads slide, the two sets of zipper racks are meshed with each other or separated from each other.