The electrode (1) for measuring biological information has a plurality of conductive wires (101), and a conductive bundle having a front end (12) as one end and a rear end (13) as the other end. (10) and a terminal portion (20) electrically connected to the conductive bundle (10), and the tip (12) of the conductive bundle (10) is capable of contacting a living body, A support portion (31) located on the tip (12) side of the bundle (10) and movably supporting the conductive bundle (10)； and a conductive bundle (10) on the tip (12) side. A protruding mechanism (a first protruding mechanism PM1 or the like) for protruding, and in a state in which the protruding mechanism is not performing an operation of protruding the conductive bundle (10), the support portion (31) is provided with the conductive bundle (10) The position relative to the terminal portion (20) is maintained. This makes it possible to use the electrode repeatedly even when the electrode becomes dirty.生体情報測定用電極（１）は、複数の導電線（１０１）を有し、一方の端部である先端部（１２）と他方の端部である後端部（１３）を有する導電束体（１０）と、該導電束体（１０）と電気的に接続した端子部（２０）と、を備え、導電束体（１０）の先端部（１２）が生体と接触可能であって、導電束体（１０）の先端部（１２）側に位置し導電束体（１０）を可動可能に支持している支持部（３１）と、導電束体（１０）を先端部（１２）側に突出させる突出機構（第１突出機構ＰＭ１など）と、を備え、突出機構が導電束体（１０）を突出させる動作を行っていない状態において、支持部（３１）が導電束体（１０）の端子部（２０）に対する相対位置を保持する。これにより、電極が汚れた場合であっても繰り返して使用することが可能となる。
