PROBLEM TO BE SOLVED: To provide an antibacterial and antivirus composition for fiber having suppressed falling or discoloration from a fiber of an antibacterial and antivirus component, capable of maintaining excellent antibacterial and antivirus effect for long time and less in limitation of usable materials.SOLUTION: There is provided an antibacterial and antivirus composition for fiber containing amino acid silver, amino acid zinc such as silver L-pyrrolidone carboxylate or zinc L-pyrrolidone carboxylate and copper ion such as copper pyrrolidone carboxylate. There is provided an antibacterial and antivirus composition for fiber where further the composition contains sulfuric acid and contains N-long chain acylamino potassium, glutamic acid, and preferably contains citric acid. There is provided a fiber product having the antibacterial and antivirus composition for fiber applied or impregnated thereon.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】抗菌・抗ウイルス性成分の繊維からの脱落や変色が抑制され、優れた抗菌・抗ウイルス効果を長期間維持することができ、使用可能な材料の制限も少ない繊維用抗菌・抗ウイルス性組成物の提供。【解決手段】L-ピロリドンカルボン酸銀やL-ピロリドンカルボン酸亜鉛などのアミノ酸銀、アミノ酸亜鉛およびピロリドンカルボン酸銅などの銅イオンを含む繊維用抗菌・抗ウイルス性組成物。更に、前記組成物は硫酸を含み、その上N-長鎖アシルアミノカリウムを含み、グルタミン酸を含み、クエン酸を含むことが好ましい、繊維用抗菌・抗ウイルス性組成物。繊維に、前記繊維用抗菌・抗ウイルス性組成物が塗布又は含浸されている繊維製品。【選択図】なし