It is a kind of regenerated cellulose fiber which dissolves natural cellulose materials such as cotton linter in concentrated ammonia solution of copper hydroxide or basic copper salt, and then prepared into spinning solution. In the coagulation bath, the molecular chemicals of copper ammonia cellulose were decomposed and regenerated. The hydrated cellulose is processed to obtain copper ammonia fiber, which is easy to be decomposed by bacteria in soil and water and won’t damage the environment also won’t produce toxic gases when burns. It is a kind of "green textile" that caters to the current trend of environmental protection. It has some distinct properties of moisture absorption, dehumidification, good air permeability, delicate luster, silk sense, anti-static, anti bacteria and water absorption, soft feel and good drapability.