An electronic device includes a host, a driving mechanism, a main display, and an auxiliary display. The main display is connected to the host through the driving mechanism. The auxiliary display is located between the host and the main display. The auxiliary display has a pivoting end and a movable end, the pivoting end is pivotally connected to the host, and the movable end is connected to the driving mechanism. The main display is configured to be folded or unfolded with respect to the host and synchronously drive the auxiliary display to ascend or descend through the driving mechanism.