A method for controlling a foldable display device includes detecting a state of a foldable display unit, the foldable display unit being in a folded state when the foldable display device is folded and being in an unfolded state when the foldable display device is unfolded, and the foldable display unit being divided into a first area which is a border area, a second area which is a folding area and a third area located between the first area and the second area, deactivating touch sensor units of the first area and the second area and activating a touch sensor unit of the third area, if the foldable display unit is in the folded state, and deactivating the touch sensor unit of the first area and activating the touch sensor units of the second area and the third area, if the foldable display unit is in the unfolded state.