Improved aluminum alloy wheel

The invention discloses an improved aluminum alloy wheel, which comprises a weight reducing nest on a wheel mounting surface, a casting groove at the side of a central hole, and two casting grooves at the outer side of a mounting surface. The casting weight reducing nest is arranged on the aluminum alloy wheel mounting surface, two casting grooves or a large through groove communicated with the weight reducing nest are/is formed at the outer side of the mounting surface, namely the two casting grooves at the outer side of the mounting surface are combined into a communicated large casting groove; and the position of the weight reducing nest close to the central hole is provided with the casting groove which is chamfered through the central hole and reaches a tool withdrawal groove of the central hole. The improved aluminum alloy wheel has the advantages of reducing the risk that a running system is eroded by accumulated water for a long term and improving the running reliability and safety.