An electronic device is provided, including first and second bodies, a processing module, a touch display panel, and at least one sensing unit. The second body is rotatably connected to the first body. The processing module is disposed in the first body or the second body. The touch display panel is disposed on the second body, is coupled to the processing module, and has a main display part, and first and second display parts. The sensing unit is disposed in the first body or the second body and coupled to the processing module. When the sensing unit detects the first and second bodies are folded relative to each other, the processing module is switched to a first mode. In the first mode, the first and second display parts are adapted to synchronously display or individually display a first message, a second message, or a third message.