PROBLEM TO BE SOLVED: To provide a pulse wave sensor unit that can measure pulse waves continuously for a long time.SOLUTION: A pulse wave sensor unit 10 comprises a pressure sensor 20, a wiring board 40, connecting parts 51 and 52, and adhesive tape 80. The pressure sensor 20 and the wiring board 40 are opposed to each other via the connecting parts 51 and 52. The pressure sensor 20 comprises a diaphragm part 21, a supporting part 22, piezoresistances, first electrodes 26, and first dummy electrodes 27. The wiring board 40 comprises second electrodes 42 and second dummy electrodes 45. The connecting parts include: the first connecting parts 51 that connect the first electrodes 26 and the second electrodes 42 and the second connecting parts 52 that connect the first dummy electrodes 27 and the second dummy electrodes 45. A closed space is formed between the diaphragm part 21 and a region to be measured 101 by fixing the pressure sensor 20 to the region to be measured 101 with the adhesive tape 80.SELECTED DRAWING: Figure 1
