To provide a biosignal measurement apparatus for combining ease of measurement and high performance with less wearing feeling and less uncomfortable feeling imparted to a subject.SOLUTION: A biosignal measurement apparatus (10) that is used by being affixed on a living body is provided with: an affixed part (115) that is a sheet, in which a signal-acquiring section (110) of multiple electrodes and wiring connected to each of the electrodes are formed, and which can be freely expanded, contracted and bent and is adhesive； and a substrate that is connected to the wiring and on which a signal processing circuit for wirelessly transmitting biosignals obtained through the wiring is mounted. The signal-acquiring section (110) is exposed on the surface of the affixed part (115), and the affixed part (115) and the substrate are stacked so that the back surface of the affixed part (115) faces the substrate.SELECTED DRAWING: Figure 1【課題】被検者に与える装着感及び違和感が抑えられた、計測の簡便さと高性能とを両立させる生体信号計測装置を提供する。【解決手段】生体に貼り付けて用いられる生体信号計測装置（１０）は、複数の電極である信号取得部（１１０）及びそのそれぞれと接続される配線が形成され、伸縮及び屈曲自在で、かつ、粘着性を有するシートである貼付部（１１５）と、前記配線に接続され、前記配線を介して得られる生体信号を無線で送信する信号処理回路が実装された基板とを備え、前記信号取得部（１１０）は、前記貼付部（１１５）の表面に露出しており、前記貼付部（１１５）と前記基板とは、前記貼付部（１１５）の裏面と前記基板とが対向するように重ねられる。【選択図】図１
