Abstract: A method for manufacturing a zipper includes the step of dividing a label into two halves. The two halves are disposed on a cloth strip. Two banks of continuous chain teeth are pressed against one another and then are sewn to the cloth strip. The width between the sewing portion of two banks is equal to the distance between the two halves of the label. A wedge block expands the two banks of chain teeth outwards, so that a space is formed. The cloth strip is melted and cut, so that the cloth strip is cut adjacent to the two chain teeth. A strip separation wheel feeds out the left and right portions of the cloth strip, sewn with the chain teeth, at the same time. Fittings, such as a chain clip, are attached to the chain teeth to finish the zipper.