The utility model discloses regenerated cellulose fiber blended yarn and the preparation method, the components and the content of weight percentage: cellulose fiber occupies 25 to 70 percent, and the other fibers occupy 75 to 30 percent. The regenerated cellulose fiber is the fiber processed by adopting no less than one kind of the raw material from wood, bamboo, pearl, and wood pulp. For the regenerated cellulose fiber blended yarn provided by the invention, because the speed is controlled, each main technical gage is adjusted, each process quantification is adjusted, the rowan pick-up coefficient is reduced, the temperature control range is adjusted, thus, the level of yarn evenness is obviously improved, the details are reduced, and the yarn reached the requirement for subsequent weaving. The textile weaved by the regenerated cellulose fiber blended yarn of the invention has the moisture absorbing and sweat discharging performance, the health function for reducing the bacterial reproduction, the antistatic function, the appearance of silk like, the wearing is comfortable and handsome, also the textile is cool and dry, which is very soft for the skin, and the textile has no pollution and no poison to the human body, which is deeply favored by people.