Fully-extruded novel aluminum alloy auxiliary frame

The utility model provides a novel full-extrusion aluminum alloy auxiliary frame, front towers which are arranged in a mirror image mode are arranged on a front cross beam, any one of the front towers is connected with a rear cross beam through a longitudinal beam and a swing arm front support in sequence, and a rear suspension support penetrating through the rear cross beam is arranged on the rear cross beam. The side, away from the swing arm front support, of the rear suspension support is provided with swing arm rear supports which are arranged in a mirror image mode. According to the swing arm assembly, the extrusion structure integrating the vehicle body installation support and the swing arm front support is integrated, the rigidity of the second vehicle body installation point is improved, and the controllability of the whole vehicle is improved; a rear vehicle body mounting point and a swing arm rear mounting point are designed on the rear swing arm support, and meanwhile the rear swing arm support is