Abstract: A manufacturing method for rayon having ion-generating characteristics, featuring a ceramic content comprising 10-40% tourmaline by weight, 10-40% serpentine by weight, and 40-80% silica by weight. The ceramics are subjected to dry pulverization processing to achieve particle diameters of 2-10 &mgr;m, and then to wet pulverization processing to make ceramic fine particle powder with average particle diameters under 0.5 &mgr;m. The ceramic fine particle powder is then mixed as ceramic solids in viscose so that the ceramic content by weight is 15-35% that of cellulose. The viscose is mixed by quantitatively and continuously adding the above dispersion of ceramic in water with a vacuum-sealed agitator device installed in the viscose pipe circuit just prior to spinning of the viscose.