A foldable display device is proposed, the foldable display device including a first body and a second body formed in a plate shape to be arranged symmetrically; a display part attached to the first body and the second body to be folded or unfolded; and a hinge device coupled to the first body and the second body to connect the bodies to each other to allow the first body and the second body to be folded and unfolded and having first and second bracket, first and second main shafts, a rotation inducing part, and a movable part composed of first and second connection plates, wherein when the first and second bodies are folded, the first and second connection plates are in proximity to each other, and the first and second link connectors move about the first and second main shafts to be in proximity to each other.