This biological information acquisition device (10) is provided with a tube-shaped pressure-sensitive tube (50) which is arranged between an installation unit (32, 34) and a pressure receiving plate (70) and on which bodily movement of a subject (S) acts through the pressure receiving plate (70), a pressure detection unit (61) which receives the internal pressure of the pressure sensitive tube (50) and outputs a signal corresponding to said internal pressure, and a signal processing unit (69) which acquires biological information about the subject (S) on the basis of the signal outputted by the pressure detection unit (61). In the area near the lateral ends (71, 72) of the pressure receiving plate (70) and the pressure sensitive tube (50), a shear force suppressing part (80) is provided which reduces the shear force acting from the lateral ends (71, 72) of the pressure receiving plate (70) on the pressure sensitive tube (50).本發明關於一種生物資訊取得裝置10。在生物資訊取得裝置10上設有感壓管50、壓力感測部61和信號處理部69。其中，感壓管50為管狀，其布置在設置部32、34和承壓板70之間，對象者S的身體動作透過上述承壓板70作用於感壓管50；壓力感測部61承受感壓管50之內壓，輸出與內壓相應的信号；信號處理部69基於壓力感測部61輸出的信號，取得對象者S之生物資訊。在承壓板70之側端部71、72和感壓管50的附近，設有減小從承壓板70之側端部71、72作用於感壓管50之剪力的剪力抑制部80。
