To provide a blood pressure measuring apparatus that can reduce an impact of vibration, and an impact of strain generated in a base part.SOLUTION: A blood pressure measuring device 1 includes: an outer case 31; a base part 33; a pump 14; an operation part 13 and a vibration motor 19 installed on an edge side of the base part 33; a first hole 33d1 and a second hole 33d2 formed on an edge side opposite to the operation part 13 and the vibration motor 19 with the pump 14 of the base part 33 in between, where an on-off valve 16 is installed; a third hole 33d3 and a fourth hole 33d4 where a pressure sensor 17 is installed; a packing 35 provided to the holes 33d1, 33d2, 33d3, and 33d4; and the on-off valve 16 and the pressure sensor 17 supported by the packing 35.SELECTED DRAWING: Figure 6【課題】振動の影響、及び基部に生じたひずみの影響を小さくできる血圧測定装置を提供すること。【解決手段】血圧測定装置1は、外郭ケース31と、基部33と、ポンプ14と、基部33の縁側に設置された操作部13及び振動モータ19と、基部33のポンプ14を挟んで操作部13及び振動モータ19の反対側の縁側に形成された、開閉弁16が設置される第1孔33d1及び第2孔33d2、並びに、圧力センサ17が設置される第3孔33d3及び第4孔33d4と、孔33d1,33d2,33d3,33d4に設けられたパッキン35と、パッキン35に支持された開閉弁16及び圧力センサ17と、を備える。【選択図】 図6