The foldable display device includes a display unit having first and second display regions separated spatially or visually by being folded; a folding sensor unit for outputting a status signal regarding the degree to which the display unit is folded; and a control unit. The control unit executes a first mode in which the entire screen displayed on the display unit in a fully open state is controlled, and a second mode in which, when the state changes from the fully open state to an intermediately folded state, the screen of the display region in which the touch of a user is sensed is controlled from among the first and second display regions.