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The method comprises the following steps: melting, casting, roughing, heating, spinning, heat treatment, finishing and forming of finished products, the utility model is characterized in that a chamfering angle is produced on the inner rim of the casting aluminum alloy wheel hub blank during the intermediate step casting of the pier, and the diameter of the chamfering angle is controlled at 6-10 mm, during the roughing process, the roughness of the chamfered surface of the inner rim of the aluminum alloy wheel hub blank is controlled between 3.2 and 6.3, the method of the invention is simple and feasible, and can effectively increase the fluidity of the aluminum alloy in the spinning process and improve the yield of the aluminum alloy wheel by changing the inner rim structure of the aluminum alloy wheel blank in the manufacturing process.