The present invention discloses a technology field relating to the preparation method of textile materials, especially to a process for for low temperature production of nylon fibre. Said process comprises the steps of adding a chemical compound of transient metal during or before nylon melting course and then spinning the obtained molten mass at a low temperature of 160-250 DEG C.Adding auxiliaries of oxidation preventives, ultraviolet absorbents, light-stability agents and anstatic agents therein before the melting course or during the melting course will result in more excellent effects. The method has a lower energy consumption and a lower cost, and its industry operations are more convenient and safe, will find wide use in industries such as garments and intertexture.