Find a yarn that not only matches the color of the original fringe, but also the width of the fringe if you have to repair only a small section. Find a yarn that is as close in a coordinating color to the rest of the rug if you have to repair the entire fringe.
Remove any damaged pieces of the fringe by cutting the stitching and pulling them off the rest of the rug.
Cut a length of yarn that is manageable for you to work with, about 1 yard long. Thread the needle. Double the thread up, but do not knot the ends of the thread together.
Insert the needle from the back of the rug about 1-inch into the rug, or wherever your original fringe edge met the rest of the rug. Pull the needle through leaving about 3 inches of the length, more if necessary, depending on how long your original fringes were. Use the pliers to help you pull the needle through if necessary.
Bring the needle up and over the edge of the area rug inserting it from behind one more time. Pull the needle through. Cut the yarn leaving about a 3-inch length. Tie the two ends of the fringe together to form a knot as close to the edge of the rug as possible.
Move over slightly and repeat Steps 4 and 5 for the next piece of fringe. Continue working until you repair the entire section of your area rug fringe that needs repairing.