Manufacturing method of neckline zipper

The invention discloses a manufacturing method of a neckline zipper and belongs to the technical field of garment processing. The method comprises the following steps: determining the position and shape of a zipper opening at a zipper mounting position of a neckline on the front side of the fabric, including a lower end line, fabric stitches and neckline opening shear lines; drawing an upper stopline and a lower stop line on the reverse side of the zipper; upwards placing the reverse side of the zipper on the front side of the fabric, and aligning and sewing the lower stop line and the lowerend line; cutting off the fabric along the cut-off line of the neckline, forming a Y-shaped shearing opening in the lower end line, and forming a zipper opening; turning over the zipper, and turning over the zipper inwards from the zipper opening to the reverse side of the fabric; enabling the two ends of each fabric sewing thread of the fabric to correspond to the ends of the same side of the upper stop line and the lower