Disclosed herein is an electronic paper display device, including: a barrier rib structure having a plurality of partitioning spaces arranged in a matrix form; and a plurality of rotating balls each disposed within the partitioning spaces in a form in which a first hemisphere and a second hemisphere are coupled, wherein the rotating ball is rotated in a preset direction by a shape of the partitioning space. Herein, the electrocic paper display device forms a cavity in an asymmetrical shape to induce the rotating ball to be rotated in one direction, thereby making it possible to easily control the rotating ball.