The invention provides a preposing needle roller combined ramie converting spinning device which is characterized by consisting of a roller type converting device, an extraction roller device and a needle roller device that are respectively fixed on a stander; wherein, the needle roller device is arranged between the roller type converting device and the extraction roller device. As the existing two working procedures which are opening and rippling are replaced by the preposing needle roller combined ramie converting spinning device, fiber damage caused by severe action of sawteeth on fiber is avoided, and ramie grains and overcut fiber can be effectively reduced. Furthermore, the needle roller device is adopted to effectively solve the problem that more paralled yarn is increased due to only roller converting is utilized, and paralled yarn can be more effectively reduced by arranging the needle roller device at a fourth converting area instead of a strip-producing area, thus creatinggood condition for improving the quality of the ramie products.