A method for displaying screens on a touch screen of a mobile device, comprising: displaying, on a first screen, at least two or more object items as icons and an object item group as a pile of icons within which the icons representing the at least two or more object items (510, 520) included in the group, are arranged at a first interval to form a pile of the at least two or more object items, wherein the two or more object items and the object item group are arranged in matrix form in a spaced apart relationship from each other; and rearranging and displaying the icons of the object items (510, 520) included in the group spaced apart from each other at a second interval on the same layer on a second screen overlapping the first screen, when an input is applied to the displayed object item group and is recognized as a touch gesture, rearranging and displaying the icons of the object items (510, 520) included in the group in a successive arrangement of tilted icons that are attached one to the other at a certain angle, when the input is applied to the displayed object item group as a single drag gesture (S340, S915) in a direction towards the top or bottom of the screen, the rearranging and displaying including: identifying, when the drag gesture is received, the object items included in the object item group; and expanding and displaying the identified object items in the drag direction or in both the drag direction and the direction opposite to the drag direction, the expanding and displaying including successively arranging the identified object items along said direction on the same layer on a third screen overlapping the first screen, while the identified object items are attached to each other, at equal angles to each other and arranging adjacent identified object items in such a manner that a bottom surface of an upper object item is attached to an upper surface of a lower object item. displaying, on a first screen, at least two or more object items as icons and an object item group as a pile of icons within which the icons representing the at least two or more object items (510, 520) included in the group, are arranged at a first interval to form a pile of the at least two or more object items, wherein the two or more object items and the object item group are arranged in matrix form in a spaced apart relationship from each other; and rearranging and displaying the icons of the object items (510, 520) included in the group spaced apart from each other at a second interval on the same layer on a second screen overlapping the first screen, when an input is applied to the displayed object item group and is recognized as a touch gesture, rearranging and displaying the icons of the object items (510, 520) included in the group in a successive arrangement of tilted icons that are attached one to the other at a certain angle, when the input is applied to the displayed object item group as a single drag gesture (S340, S915) in a direction towards the top or bottom of the screen, the rearranging and displaying including: identifying, when the drag gesture is received, the object items included in the object item group; and expanding and displaying the identified object items in the drag direction or in both the drag direction and the direction opposite to the drag direction, the expanding and displaying including successively arranging the identified object items along said direction on the same layer on a third screen overlapping the first screen, while the identified object items are attached to each other, at equal angles to each other and arranging adjacent identified object items in such a manner that a bottom surface of an upper object item is attached to an upper surface of a lower object item. identifying, when the drag gesture is received, the object items included in the object item group; and expanding and displaying the identified object items in the drag direction or in both the drag direction and the direction opposite to the drag direction, the expanding and displaying including successively arranging the identified object items along said direction on the same layer on a third screen overlapping the first screen, while the identified object items are attached to each other, at equal angles to each other and arranging adjacent identified object items in such a manner that a bottom surface of an upper object item is attached to an upper surface of a lower object item.