Match damaged fringe with pre-made fringe. Pre-made fringe can be found at fabric stores and is sold by the foot or yard. Purchase enough fringe to replace the complete length of fringe and add 3 inches to the measurement. Choose a replacement with longer fringe than the existing for complete coverage of the old fringe.
Repair damaged rug areas found along the fringe using a blanket stitch to protect the rug from fraying further. A blanket stitch is a wrapping stitch that loops around the edge of the rug. When stitched tightly and with heavy-duty thread, the blanket stitch works well to prevent further damage.
Place the new fringe across the top of the old fringe and pin it into place. Let the extra fringe hang over either end of the rug, fold it under the rug and pin into place.
Use a heavy-duty thread that matches the fringe color and hand-sew the new fringe to the old fringe. Cover the old fringe and any exposed binding completely.
Flip the rug over and stitch the ends of the fringe to the back of the rug. Stitch tightly to keep the fringe securely in place.