The color light emission fiber in the presence of visible light situation nine colors, for example blue, red, green and so on. If in the absence of visible light, which itself emits light of various colors, the product of the fibers during the day with the use of ordinary fiber function is the same, and only at night or when they could continue to light the dark. Because the fibers absorb any visible light for 10-30 minutes long, will be able to build the energy stored in the fibers among the state continue to light in the dark more than four hours, and can be infinitely recycled. The product is non-toxic, excellent stability and weather resistance, is truly environmentally friendly new products. The product can be used in textile, knitting, hook, knitting, embroidery and other fields. The main products such as industrial sewing thread, embroidery thread, fabric, apparel and decorative fabrics such as weaving, underwear, curtains, curtain, table cloth, lace, mobile phone straps, embroidery, plush fabrics, carpets fabrics, tapestry fabrics, sofa fabrics, embroidery products. Changzhou color fiber, Changzhou, cotton yarn, cotton textile city www.yjfzyl.com