Abstract: The present invention discloses a unique user interface of an electronic device. The user interface comprises a first interface and a second interface. The said first interface has a displaying mode and an operating mode. The displaying mode is capable of automatically and continuously displaying a first polyhedron icon by rotating thereto in a certain sequence. The operating mode is capable of rotating the polyhedron icon in accordance with the order of the user. The second interface is capable of displaying the polyhedron by unfolding it so as to display the displaying surfaces thereof. Furthermore, the present invention has an output mode. in the output mode, a plurality of reserved intervals are added on the periphery of the development drawing of polyhedron icon so as to provide a non-digital, physical 3D polyhedron by cutting, adhering and folding the reserved intervals.