The invention provides a switch device. The switch device comprises a body, a sliding part and a conductive rotating rod, wherein the body comprises a hollow cavity; the inner surface of the cavity extends a rotating shaft and a contact base; the contact base comprises two contacts and a conductive elastic piece which are arranged at intervals; the sliding part is connected to the body and can move relative to the body; the sliding part comprises an accommodating slot formed along the moving direction; the rotating rod is pivoted on the rotating shaft; the first end of the rotating rod is accommodated in the accommodating slot of the sliding part; the sliding part moves to drive the rotating rod to rotate; and when the sliding part moves to a first position, the elastic piece generates elastic deformation when pressed by the second end of the rotating rod so as to contact the two contacts. The switch device has a simple structure and is convenient to manufacture.