Pressure sensor, and composite element and electronic device having same

The present invention provides a pressure sensor, and a composite element and an electronic device having the same, the pressure sensor comprising: a first and a second electrode layer that are spaced apart from one another; and a dielectric layer arranged between the first and the second electrode layer, wherein the dielectric layer includes one or more of a material that can be compressed and restored and that has hardness of 10 or less, a plurality of dielectric bodies that have a dielectric constant of 4 or more, and a plurality of pores.