In order to solve the problem that the zipper's pull head is stuck by the cloth head, we carried out a fundamental improvement plan. The existing disassembly track at the top end of the zipper is used on each pull tooth, and the teeth are added to the pull tooth to improve the overall strength of the zipper. When in use, the user can open the zipper of the part of the stuck cloth head at a large Angle, so that the pull head can slide out along the disassembled bevel.