At present, in the hosiery market, nylon covered spandex yarns are the main covered yarn products. It is mainly divided into orthodox etiquette socks for men, women and children, convenient socks, sports socks and ultra-thin transparent socks that are currently popular. Among them, the largest number are the stockings and pantyhose for modern women, as well as the abdominal and hip-raising socks that are popular with beauty-loving women, and ultra-thin transparent socks. These are all made of covered yarns formed by organically combining the good elasticity of spandex with the high strength and wear resistance of nylon. The product sales and prospects are very promising, which advantageously promotes the development of nylon covered yarns.