PROBLEM TO BE SOLVED: To provide a biological information collecting device which can collect stable biological information by eliminating an unbalanced inflation amount in an acted object due to a difference in sites subjected to actions from a subject and making the inflation amount of the acted object uniform.SOLUTION: A biological information collecting device 1 for collecting biological information of a subject includes: an acted object 2 which has an internal space which can hold a prescribed fluid, and where an internal pressure varies by external actions from the subject and a pressure detecting part 3 for detecting variations of the internal pressure. The acted object 2 includes a plurality of cells 21a to 21e which are linearly connected and respectively have an internal space for holding the fluid and connecting parts 22a to 22d for connecting the adjacent cells. The connecting part 22a to 22d is configured to have a squeezed part (a part excluding a seal part 221) which has a cross sectional area that is smaller than a cross sectional area of the cell 21a to 21e in a linear direction, and where the fluid inside the adjacent cells can circulate.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】 被験者からの作用を受ける部位の違いによって生じる被作用体における膨張量の片寄りをなくし、被作用体の膨張量を均一化させることで、安定した生体情報を収集可能な生体情報収集装置を提供する。【解決手段】 被験者の生体情報を収集する生体情報収集装置1であって、所定の流体を保持可能な内部空間を有し、被験者からの外的な作用を受けて内圧が変動する被作用体2と、内圧の変動を検知する圧力検知部3と、を備え、被作用体2は、直線状に連設され、それぞれ流体を保持可能な内部空間を有する複数のセル21a~21eと、隣接するセル同士を連結させる連結部22a~22dと、を備え、連結部22a~22dは、セル21a~21eの前記直線方向に沿った断面積よりも断面積が狭く、隣り合うセル内の流体が流通可能な絞り部(シール部221を除く部分)を有する構成としてある。【選択図】 図1