Zipper and manufacturing method thereof

The invention provides a zipper and a manufacturing method of the zipper. The zipper is provided with tapes and a plurality of teeth arranged on the tapes, for the zipper, an insertion bar, an insertion box and a box bar arranged in the insertion box are arranged at the end part in the vertical direction, reinforcing parts used for reinforcing the tapes are arranged on the periphery of the insertion bar, the insertion box and the box bar, the reinforcing parts are provided with cut-off parts, the tapes are provided with tape concave parts, and at least one parts of the tape concave parts are arranged in a protruding manner in at least one direction of the vertical direction and the left-right direction of the zipper relative to the cut-off parts. For the zipper, at least one parts of the tape concave parts are arranged in a protruding manner relative to the cut-off parts, so that the discomfort caused when a user touches the hard reinforcing parts positioned at the edges of the tape concave parts during the p