The invention belongs to agricultural machines, and discloses a double screw conveying auger assembly for removing falling corn grains and snow dust. A snow dust discharging auger assembly and a corn grain discharging auger assembly are assembled in a double auger shell, and a partition plate is assembled between the snow dust discharging auger assembly and the corn grain discharging auger assembly. A snow dust discharging barrel and a corn grain discharging barrel are assembled on the lower side of the rear end of the double auger shell, and a door baffle with an adjusting pull rod is arranged on the corn grain discharging barrel in a hinged mode and is in closing or opening fit with two discharging ports in the corn grain discharging barrel. A driving wheel and a driving gear are fixedly arranged on the snow dust discharging auger assembly, a driven gear is fixedly arranged on the corn grain discharging auger assembly, and the driving gear is meshed with the driven gear. The double screw conveying auger assembly is novel and reasonable in structure, high in applicability, reliable in use and capable of effectively conveying and removing falling corn grains and snow dust, and discharging is smooth without the blocking fault.