Seed packaging machine with impurity removal function

The seed packaging machine with the impurity removing function comprises a packaging machine body, an impurity removing barrel is obliquely arranged on the upper portion of the interior of the packaging machine body, an annular rack is welded to the outer wall of the impurity removing barrel, and a first driving motor is fixedly installed on the upper portion of the back vertical face of the packaging machine body; and the output end of the first driving motor extends into the packaging machine to be provided with a gear, the gear is meshed with the annular rack, and induced draft fans are fixedly installed at the positions, located in the packaging machine, of the two sides of the impurity removing barrel. According to the dust removal device, the induced draft fan and the dust removal filter bag are arranged, and the induced draft fan works in the impurity removal process and can introduce an air mixture in the impurity removal process into the dust removal filter bag for filtering, so that the dust removal