A user terminal device and a displaying method thereof are provided. The user terminal device includes a display configured to display a first screen on a display which is divided by a folding line into a first area and a second area, the second area being larger than the first area with reference to a folding line and including an exposure area that is exposed while the display is folded along the folding line such that the first area faces the second area, a detector configured to detect, while the first screen is displayed, a first folding interaction of folding the display such that the first area faces the second area and a second folding interaction of folding the display such that a first cover corresponding to the first area faces a second cover corresponding to the second area, and a controller configured to, in response to detecting the first folding interaction, display a second screen related to the first screen on the exposure area, and in response to the second folding interaction being detected, display a third screen related to the first screen on the first area or the second area.