[Aim] Provided is a biological information detecting unit which enables a connection operation between a living body mounting portion and an information detecting portion to be carried out with greater ease than before. [Solution] A first living body mounting portion (2) of a biological information detecting unit (1) comprises an adhesive layer (20) and a substrate layer (21) in which a first hole is formed, and having one side surface thereof being capable of being adhered to a living body a first conductor layer (22) configured to close one side surface side of the adhesive layer (20) in the first hole a first electrode layer (23) formed in the first hole and on the other surface of the first conductor layer (22) and a first magnetic body (24) formed in the first hole and on a surface opposite to the surface where the first conductor layer (22) is formed in the first electrode layer (23). An information detecting portion (3) comprises a second magnetic body (30) which is capable of being adsorbed to the first magnetic body (24), and a detecting portion (31) which is capable of being conducted to the first electrode layer (23) and the first conductor layer (22) through the second magnetic body (30) adsorbed to the first magnetic body (24) and capable of detecting information related to the living body.La présente invention vise à fournir une unité de détection dinformations biologiques qui permet de réaliser plus facilement quauparavant une opération de connexion entre une partie montage pour corps vivant et une partie détection dinformations. La présente invention concerne par conséquent une partie montage pour corps vivant (2) dune unité de détection dinformations biologiques (1) qui comprend une couche adhésive (20) et une couche de substrat (21) dans laquelle est formée un premier trou, et dont une surface latérale peut être collée à un corps vivant une première couche conductrice (22) configurée pour fermer un côté de la surface latérale de la couche adhésive
