Provided is an electrically conductive fiber structure that is capable of maintaining high electric conductivity even after repeated laundering and can be used for biosignal-acquiring electrodes. This electrically conductive fiber structure is configured from a woven or knitted fabric, etc. comprising an electrically conductive polymer. The electrically conductive fiber structure is characterized in that an electrically conductive resin comprising the electrically conductive polymer is loaded in gaps between single fibers configuring the fiber structure and when a thickness direction cross-section of the fiber structure is examined, the area ratio of the electrically conductive resin present in the region that is 15-30 [mu]m from the surface layer is at least 15%.本發明所提供的導電性纖維構造物，係重複洗滌後仍可保持高導電性，亦能適用於取得活體信號電極。本發明的導電性纖維構造物係由含有導電性高分子的織編物等構成。上述導電性纖維構造物係含有上述導電性高分子的導電性樹脂，載持於構成纖維構造物的單纖維與單纖維之間隙中，觀察上述纖維構造物厚度方向截面時，在距表層15~30μm區域中所觀察到之上述導電性樹脂的面積比率達15%以上。
