A biological signal detection device (1) has a neck band (13) that can be worn along the circumferential direction of the neck of the user, a pair of sensing parts that are attached to both ends of the neck band (13) (11, 12). The sensing section (11 (12)) has a conductive cloth (electrocardiographic electrode) (15) having flexibility and detecting an electrocardiographic signal, a substantially thin plate-like electrode supporting member to which the conductive cloth (15) (112), and a main body (111) to which the electrode supporting member (112) is attached. The electrode supporting member (112) is configured to be attachable to and detachable from the main body (111). Further, the conductive cloth (15) is formed in a flat shape, and is wound around the electrode support member (112) and attached.生体信号検出装置(1)は、使用者の頸部の周方向に沿って装着可能なネックバンド(13)と、ネックバンド(13)の両端に取り付けられ、生体信号を検出する一対のセンシング部(11,12)とを備えている。センシング部(11(12))は、可撓性を有し、心電信号を検出する導電布(心電電極)(15)と、導電布(15)が取り付けられる略薄板状の電極支持部材(112)と、電極支持部材(112)が装着される本体部(111)とを備える。電極支持部材(112)は、本体部(111)に着脱可能に構成されている。また、導電布(15)は、平面状に形成されており、電極支持部材(112)に巻き付けて取り付けられる。
