A combined switch device comprising: a housing; a printed circuit board disposed in the housing; and a switch unit that comprises: a switch knob which is rotatably disposed in the housing in such a fashion as to be exposed at one end thereof to the housing; a switch driving body disposed inside the housing, and connected with the switch knob; a switch supporting unit (230, 240) configured to support the switch driving body with respect to the housing; and a switch including a directional switch disposed on the switch driving body and the printed circuit board and configured to be driven by a motion performed on a plane that is perpendicular to a rotating axis of the switch knob, and a rotary switch configured to be driven by the central rotation of the rotating axis of the switch knob, wherein the switch supporting unit (230, 240) comprises: a switch driving body-directional support configured to support the switch driving body to enable the switch knob to be moved on the plane that is perpendicular to the rotating axis, and configured to support the switch driving body to enable the switch knob to be moved in the direction of the rotating axis; and a switch driving body-elastic support configured to elastically support the movement of the switch knob in the direction of the rotating axis, wherein the switch driving body-directional support is constructed in a universal joint type, wherein the switch driving body-elastic support comprises: a support holder disposed beneath the switch driving body; a support body disposed at the support holder such that the support body can perform its sliding movement; a support elastic part configured to be in close contact at one end thereof with the support holder and at the other end thereof with the support body, and configured to apply an elastic force between the support holder and the support body; and a support body counterpart disposed at the housing to correspond to an end of the support body to allow the support body to perform the tilting movement, characterized in that the support body counterpart includes an apex end and a conical sloping surface, a support body load part is in close contact with the apex end when no external force is applied to the switch knob to form a stable state, and when an external force applied to the switch knob is removed, the elastic restoring force of the support elastic part acts to displace the support body load part to the apex end. a housing; a printed circuit board disposed in the housing; and a switch unit that comprises: a switch knob which is rotatably disposed in the housing in such a fashion as to be exposed at one end thereof to the housing; a switch driving body disposed inside the housing, and connected with the switch knob; a switch supporting unit (230, 240) configured to support the switch driving body with respect to the housing; and a switch including a directional switch disposed on the switch driving body and the printed circuit board and configured to be driven by a motion performed on a plane that is perpendicular to a rotating axis of the switch knob, and a rotary switch configured to be driven by the central rotation of the rotating axis of the switch knob, a support holder disposed beneath the switch driving body; a support body disposed at the support holder such that the support body can perform its sliding movement; a support elastic part configured to be in close contact at one end thereof with the support holder and at the other end thereof with the support body, and configured to apply an elastic force between the support holder and the support body; and a support body counterpart disposed at the housing to correspond to an end of the support body to allow the support body to perform the tilting movement, a support body load part is in close contact with the apex end when no external force is applied to the switch knob to form a stable state, and when an external force applied to the switch knob is removed, the elastic restoring force of the support elastic part acts to displace the support body load part to the apex end.