A mode-switching device of a control panel is operated to control the operating status of the control panel to be switched between a first operating mode and a second operating mode. The mode-switching device includes a foldable plate, a triggering element and a switch device. The foldable plate includes a rotating shaft and a rotating arm. The rotating arm has a cam adjacent to the connecting portion between the rotating shaft and the rotating arm. The cam has a first arc surface, a second arc surface and a rotating center. A first distance between the first arc surface and the rotating center is less than a second distance between the second arc surface and the rotating center. The triggering element is disposed adjacent to the cam. The switch device is disposed on a control circuit board and under the triggering element.