An electronic device including a first case, a first protrusion, a click pad and a frame is provided. The first case has an accommodating cavity, wherein the accommodating cavity is recessed from a surface of the first case and forms a bottom plate, first and second side walls which are erected on one pair of opposite sides of the bottom plate, and two third side walls which are erected on another pair of opposite sides of the bottom plate. The first protrusion is disposed on the bottom plate. The click pad has a switch. The frame is disposed between the first case and the clip pad, wherein the click pad is assembled in the accommodating cavity by the frame, and the switch directly faces to the first protrusion.