A flexible display device includes: a flexible display panel configured to display an image; a dielectric elastomer film disposed on a portion of the flexible display panel; a first electrode layer disposed on an upper portion of the dielectric elastomer film; and a second electrode layer disposed on a lower portion of the dielectric elastomer film, the first electrode layer includes a plurality of first electrodes, each of the plurality of first electrodes disposed apart from each other, the second electrode layer includes a plurality of second electrodes, each of the plurality of second electrodes disposed apart from each other.