<p>A pressure-sensitive sensor comprises a fixed electrode (7) having a surface covered with a dielectric member (4), and a movable electrode (6) having a surface partially in contact with the surface of the dielectric member (4) upon receiving an external pressure and forming a capacitance corresponding to the magnitude of the pressure between the fixed electrode (7) and the movable electrode (6). The dielectric member (4) consists of a lower layer film (4a) forming the layer on the fixed electrode (7) side, and a sheet-like upper layer film (4b) having a lower surface roughness than the lower layer film (4a) and arranged to cover the lower layer film (4a). Consequently, a pressure-sensitive sensor which can suppress deterioration in variation or linearity of pressure-capacitance characteristics is achieved while suppressing increase in cost.</p>
