The utility model relates to the technical field of zippers, and discloses a quick-opening zipper which comprises a left zipper tooth and a right zipper tooth, zipper heads are arranged at the two ends of the left zipper tooth and the two ends of the right zipper tooth in a connected mode, a quick-release zipper tooth is arranged at the middle end of the right zipper tooth in a connected mode, the quick-release zipper tooth comprises two sets of teeth, inclined faces are arranged on the sides, close to each other, of the two sets of teeth, and the two sets of teeth are connected through the inclined faces. An embedding groove is formed in the surface of the inclined face, a connecting groove is formed in one side of each tooth, the connecting grooves on the sides, away from each other, of the teeth are embedded with the adjacent left zipper teeth, the left zipper teeth are divided into multiple sets, one set of left zipper teeth is located between the two teeth, one end of the left zipper teeth located between the two teeth is embedded with the corresponding embedding groove, and the other end of the left zipper teeth located between the two teeth is embedded with the corresponding embedding groove. The left zipper teeth are connected with the right zipper teeth in a meshed mode. According to the utility model, the quick-opening effect can be effectively achieved, and meanwhile, the effect of stable connection and use is ensured.