To enable providing a yarn, a cloth and a fiber product capable of exhibiting antibacterial property originally obtained by a silver-based antibacterial agent or a silver yarn, or an ion of an antibacterial metal on a yarn or a cloth for overcoming problems that adding antibacterial property by an antibacterial metal ion to a cation dyed yarn, cloth and a fiber product containing the cloth as a raw material is difficult.SOLUTION: A yarn, a cloth and a fiber product having original functions obtained by an antibacterial metal ion can be obtained by impregnating a yarn or a cloth after conducting cation dying into a cation agent solution, neutralizing and consuming anion definitely remaining in the yarn or the cloth.SELECTED DRAWING: None【課題】カチオン染色を行った糸や布地、及び該布地を原料とする繊維製品には、抗菌性金属イオンによる抗菌性の付与は難しい課題であった。本発明は糸や布地に銀系抗菌剤や銀糸或は抗菌性金属のイオンが持つ本来の抗菌性を発現できる糸や布地、及び繊維製品を得る事を可能にすることを課題とする。【解決手段】カチオン染色を行った後の糸や布地をカチオン剤溶液に浸漬し、糸や布地に必ず残留するアニオンを中和、消費させ抗菌性金属イオンのもつ本来の機能を有する糸や布地、繊維製品を得る事が出来る。【選択図】なし