The present invention provides an adhesive composition including a resin and an electro-conductive material, wherein the electro-conductive material is one or more salts selected from sodium salt, potassium salt, and calcium salt of fluorosulfonic acid having 5 or more carbon atoms shown by the general formula (1) : (R1-X-Y-SO3-)nMn＋(1) , wherein, R1represents a monovalent hydrocarbon group having 1 to 30 carbon atoms and optionally substituted by a heteroatom or optionally interposed by a heteroatom； X represents any of a single bond, an ether group, an ester group, and an amide group； Y represents a linear or branched alkylene group having 2 to 4 carbon atoms, containing 1 to 6 fluorine atoms, and optionally containing a carbonyl group； Mn＋represents any of a sodium ion, a potassium ion, and a calcium ion. This can form a living body contact layer for a bio-electrode with excellent electric conductivity, biocompatibility, and light weight, which can be manufactured at low cost and does not cause large lowering of the electric conductivity even when it is wetted with water or dried.本發明之課題係提供一種黏著劑組成物，可形成導電性及生物相容性(biocompatibility)優良、輕量、且能以低成本製造、無論被水潤濕抑或乾燥其導電性也不會大幅降低之生物體電極用之生物體接觸層。該課題之解決方法係一種黏著劑組成物，含有樹脂及導電性材料，該導電性材料為選自於下式(1)表示之碳數為5以上之氟磺酸之鈉鹽、鉀鹽及鈣鹽中之1種以上之鹽。 (R1-X-Y-SO3-)nMn＋(1) 式中，R1為也可經雜原子取代，也可插入雜原子之碳數1~30之一價烴基。X為單鍵、醚基、酯基及醯胺基中之任一者。Y為含有1~6個氟原子之碳數2~4之伸烷基，且也可具有羰基。Mn＋為鈉離子、鉀離子及鈣離子中之任一者。
