To provide a lamp device capable of easily and reliably performing the control of turning a lamp around the center of the first axis and the control of tilting the lamp at the center of the second axis orthogonal to the first axis.

An actuator 1 having a first motor for turning a first output unit 20 at the center of the first axis A and a second motor for driving a second output unit 21 straight on the third axis C at the twisted position from the second axis B orthogonal to the first axis A is fixed to a lamp body 100 of a vehicle. The first output unit 20 and a lamp 2 are connected to each other via a double-axis connecting mechanism for slantingly supporting the lamp 2 at the center of the second axis B while integrally turning the first output unit and the lamp at the center of the first axis A. The second output unit 21 and the lamp 2 are connected to each other via a permissible transmission mechanism for transmitting the straight driving force of the second output unit 21 while permitting the turn of the lamp 2 at the center of the first axis A.