Wheel hub casting method capable of enhancing strength of upper lug of wheel hub

The invention provides a wheel hub casting method capable of enhancing strength of an upper lug of a wheel hub. The method comprises the following steps: S1, roasting a die; S2, spraying a release agent to the surface of the die; S3, assembling the die; S4, pouring molten metal for casting the wheel hub into the die, wherein the molten metal fills a casting cavity and a molten metal storage room;S5, after pouring, cooling the molten metal located in the upper lug of the formed wheel hub in the casting cavity quickly, and meanwhile, pressurizing the molten metal stored in the molten metal storage room, wherein the molten metal in the molten metal storage room feeds the upper lug of the wheel hub fully at first, and then cooling and condensing other parts of the wheel hub successively; S6,after the wheel hub is fully condensed, stopping pressurizing and discharging gas in the molten metal storage room; and S7, opening the die: demolding the casted and formed wheel hub, and taking the casted and formed wheel hub