The present invention relates to a bioinformation acquisition device including a seat part (22), wherein the seat part (22) is configured by sequentially stacking a first layer (61), a second layer (62) and a third layer (63) from an upper face side toward an inner side of the seat part (22). the rigidity of the second layer (62) is higher than that of the third layer (63), and the rigidity of the first layer (61) is lower than that of the third layer (63) and a pressure-sensing part (31) provided with a pressure-sensing body (34) arranged between the first layer (61) and the second layer (62).本發明關於一種生物資訊取得裝置,其坐部(22)構成為:從該坐部(22)的靠上表面側起往內側依序層疊有第一層(61)、第二層(62)和第三層(63),第二層(62)之剛性高於第三層(63)之剛性,且第一層(61)之剛性低於第三層(63)之剛性。感壓部(31)具有布置在第一層(61)與第二層(62)之間的感壓部本體(34)。10‧‧‧生物資訊取得裝置21‧‧‧椅子22‧‧‧坐部23‧‧‧椅背部30‧‧‧資訊取得部31‧‧‧感壓部32‧‧‧密封部33‧‧‧連接部34‧‧‧感壓部本體35‧‧‧感測器本體36‧‧‧麥克風45‧‧‧信號輸出部46‧‧‧USB纜線50‧‧‧平板終端51‧‧‧顯示部61‧‧‧第一層62‧‧‧第二層63‧‧‧第三層64‧‧‧第四層