The present invention provides a nickel-copper alloy thin-film laminated film that is inexpensive, has low surface electrical resistivity and chemical resistance, is excellent in storage stability, and can be used favorably as an electrode film for biosensors such as a blood sugar sensor. The film of the present invention is laminated with a nickel-copper alloy thin-film directly on at least one surface of a base material of the film or is laminated on the at least one surface of the base material of the film with other layers inbetween. The nickel-copper alloy thin-film has a nickel content between 40% to 95% by weight, and X-ray diffraction patterns of the nickel-copper alloy thin-film are demonstrated at three ranges: 43° ≦ 2 θ ≦ 45°, 49° ≦ 2 θ ≦ 52°, and 74° ≦ 2 θ ≦ 77° with a diffraction peak in at least one of three ranges.有鑒於以往之問題點，本發明之目的在於提供一種鎳銅合金薄膜積層膜，其廉價，具有較低之表面電阻值、耐化學品性，且保存穩定性優異，可適合作為血糖值感測器等之生物感測器用電極膜使用。本發明之鎳銅合金薄膜積層膜係於膜基材之至少單面上，直接或隔著其他層而積層有鎳銅合金薄膜之膜，鎳銅合金薄膜中之鎳的含有率為40重量%以上95重量%以下，鎳銅合金薄膜於X射線繞射圖案中，於43°≦2θ≦45°、49°≦2θ≦52°、及74°≦2θ≦77°此3個範圍中之至少1個範圍具有繞射峰值。
