The embodiment of the invention provides a display and a control method thereof and relates to the technical field of display. The display can achieve see-through display and can also achieve normal display. The display comprises a transparent display panel, a light guide plate which is arranged on the side, opposite to the light-out side, of the transparent display panel and lamp strips which are arranged on the edges of the transparent display panel, and light emitted out by the lamp strips is irradiated to the light guide plate; the display further comprises guide rails, and the guide rails are arranged on the side, opposite to the light-out side, of the transparent display panel and used for providing tracks for movement of the light guide plate; the direction of the light emitted out by the lamp strips can be adjusted. The display is used for conducting transparent display and normal display.