A fixing device for a curtain airbag is provided. The fixing device comprises a bracket extending substantially along a lengthwise direction and configured to receive a portion of folded curtain airbag, a leg connected to and pivotable to the bracket and a joint. The leg is positioned at a predetermined position along a lengthwise direction of the bracket. The joint is located between the bracket and the leg, and configured to break to separate the bracket from the leg when an applied force exceed a predetermined level.