Pressure sensor, preparation method thereof and electronic device

The invention discloses a pressure sensor (10), a preparation method thereof and an electronic device. The pressure sensor (10) comprises a first flexible film layer (101), a first electrode layer (102), a first insulating layer (103), a second electrode layer (104) and a second flexible film layer (105) which are stacked in sequence. Since the first flexible film layer (101) and the second flexible film layer (105) in the pressure sensor (10) have good flexibility, the pressure sensor (10) can have good flexibility, and it is convenient to apply the pressure sensor (10) to flexible products. Moreover, the weight of the flexible film layers (101, 105) is small, so that the risk of collapse of the cavity (a) can be reduced, the yield of the pressure sensor (10) is ensured, and the effect of pressure detection is ensured.