An apparatus for displaying a shortcut icon window of a mobile device includes: a display unit that displays a first layer including a plurality of first shortcut icons for executing different applications and a second layer including a shortcut icon window having one or more second shortcut icons, the second layer being located on the first layer; and a controller that, when at least one of the first shortcut icons is selected, controls to display the shortcut icon window on an execution screen of an application corresponding to the selected at least one first shortcut icon.