Feather yarns can be produced by various kinds of fibers. Viscose, nylon, acrylic and polyester are commonly used at present. The main part of the feather is core wire, and its quality and performance must meet the requirements of knitting yarn. Ornament yarn is the main part of feather yarn, which determines the sensory effect of the finished yarn. The wire fiber needs good luster, elastic and natural erect; the ornament yarn strength should not be too high, it should be easy to cut, get the neat fluff of the length, and not easily get rid of the hair. It is suitable to use the filament. The core line decorating line should use the same heat shrinkage material to prevent the yarn after finishing and dyeing to become long and short hairs and stripe.