A lighting control system, comprising: a movable object mounted to be rotatable with respect to a stationary object; a switch mounted on the movable object and configured to emit light; a position recognizer installed in the switch to sense position information of the movable object; and a controller configured to receive the position information and to adjust an intensity of light emitted by the switch based on the position information, characterized in that the stationary object is a seat of a vehicle, and the movable object is an armrest rotatably mounted on the seat, wherein the switch is a seat switch provided in a seat shape and mounted on the armrest, the armrest is rotatable between an open position and a closed position; the armrest is completely unfolded from the seat at the open position, and is completely folded towards the seat at the closed position; when the armrest is located at the open position, the seat switch emits light at a set maximum brightness that is a maximum brightness among positions of the armrest, the set brightness is adjustable by a brightness adjustment unit configured to communicate with the controller; when the armrest is located at the closed position the controller controls the seat switch to stop emission of light or to emit light at a set minimum brightness that is a minimum brightness among the positions of the armrest; the controller controls the seat switch to perform fade-out so that the intensity of light emitted by the seat switch is gradually decreased when the armrest is rotated to the closed position, and the controller controls the seat switch to perform fade-in so that the intensity of light emitted by the seat switch is gradually increased when the armrest is rotated to the open position opposite to the closed position. a movable object mounted to be rotatable with respect to a stationary object; a switch mounted on the movable object and configured to emit light; a position recognizer installed in the switch to sense position information of the movable object; and a controller configured to receive the position information and to adjust an intensity of light emitted by the switch based on the position information, the stationary object is a seat of a vehicle, and the movable object is an armrest rotatably mounted on the seat, wherein the switch is a seat switch provided in a seat shape and mounted on the armrest, the armrest is rotatable between an open position and a closed position; the armrest is completely unfolded from the seat at the open position, and is completely folded towards the seat at the closed position; when the armrest is located at the open position, the seat switch emits light at a set maximum brightness that is a maximum brightness among positions of the armrest, the set brightness is adjustable by a brightness adjustment unit configured to communicate with the controller; when the armrest is located at the closed position the controller controls the seat switch to stop emission of light or to emit light at a set minimum brightness that is a minimum brightness among the positions of the armrest; the controller controls the seat switch to perform fade-out so that the intensity of light emitted by the seat switch is gradually decreased when the armrest is rotated to the closed position, and the controller controls the seat switch to perform fade-in so that the intensity of light emitted by the seat switch is gradually increased when the armrest is rotated to the open position opposite to the closed position.