The invention discloses a production method of natural colored cotton, ramie and white cotton fiber blended yarn, which is characterized in that firstly natural colored cotton fibers in different colors are respectively processed through blowing, cotton carding, pre-drawing, silver lapping and fine combing, then the process of 'light ration, low speed, close distance and strong combing' is carriedout during release striking, at the same time blowing, cotton carding and pre-drawing are carried out on ramie fibers, the obtained fiber rods in different colors are respectively drawn with the ramie fibers, and roving, slubbing and spooling are carried out to obtain spooled yarn in different colors. The method processes the natural colored cotton fibers in different colors respectively, the produced yarn has natural color, needs no dyeing, and thus chemical residue in the dyeing process is avoided; the invention enriches the color variety of ramie fabrics, expands the use space of the ramiefabrics further, simultaneously shortens the process, improves the quality of finished products, and has good economic and social benefits.