Problem to be solved: to provide a bioelectrode to measure biosignals.Solution: a biological electrode having a biomechanical contact portion which is in contact with a living body and has a conductive contact and contains two or more carbon blacks having different amounts of rubber and DBP.Diagram【課題】精度良く生体信号を測定する生体電極の提供。【解決手段】生体と接触する生体接触部であって、導電性を有し、ゴム材料とDBP吸油量が異なる2種以上のカーボンブラックとを含有する生体接触部を有する生体電極。【選択図】図1