An assembly fixture used to assemble hinges to a display panel assembly includes a base to support the display and at least one hinge mounting member fixed on the base. Each hinge mounting member includes two support bars projected from the base, a axle and a rotatable arm. The opposite ends of the axle respectively rotatably connected to the tops of the two support bars. The rotatable arm can rotated in concert with the axle. Each rotatable arm further includes at least two protruding portions to position the hinge and at least one magnetic element to attract the hinge, thereby fixing the hinge to the rotatable arm.