PROBLEM TO BE SOLVED: To provide: a surface treatment agent that has an anti-viral property as well as does not impair the appearance of an object body to be coated when used for the coating, and that is excellent in anti-viral property and has a transparency and an object body coated with the same, especially an anti-viral sheet shaped product such as a sheet and a film or the like.SOLUTION: Provided are: an anti-viral surface treatment agent obtained by adding a sulfonic acid-based surfactant to an anionic aqueous resin emulsion and an anti-viral sheet shaped product in which at least one surface of a sheet shaped product is coated with said anti-viral surface treatment agent.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】抗ウイルス性を有するとともに塗布された際に被塗装体の外観を損ねることがない、抗ウイルス性に優れ透明性を有する表面処理剤及びこれを塗布した被塗装体、特にシート・フィルム等の抗ウイルス性シート状物の提供。【解決手段】アニオン系水性樹脂エマルジョンにスルホン酸系界面活性剤が添加された抗ウイルス性表面処理剤とすることであり、シート状物の少なくとも片面に、該抗ウイルス性表面処理剤が塗布されている抗ウイルス性シート状物。【選択図】なし