The invention relates to a preparation method and auxiliaries for clothes ornament, aiming at providing a method for efficiently sewing a zigzag decorative stitch on a silk type thin fabric and a template component. The method has the characteristics of being high in production efficiency, low in requirement on skill of operators and relatively low in production cost; and the template component issimple in structure and convenient and easy in manufacture. According to a technical scheme, the method for sewing zigzag decorative stitch on a thin fabric comprises the following steps: 1, making an operating template; 2, making a zigzag sewing machine needle plate; 3, making a slide wheel type presser foot; and 4, implementing a specific sewing method. The template component for the sewing zigzag decorative stitch on a thin fabric comprises an operating template, a presser foot and a zigzag sewing machine needle plate, and is characterized in that the operating template is two blocks of slabs which are adhered to form a hinge structure by a flexible belt, through chutes which correspond to each other are formed in the two layers of slabs, and the width of the chutes is 5mm-8mm.