Sowing machine with screening structure

The utility model belongs to the technical field of agricultural seeding, and particularly relates to a seeding machine with a screening structure, which comprises a storage bin, a seeding area and a screening area are arranged in the storage bin, a blocking plate is fixedly connected in the storage bin, a supporting disc is rotatably connected in the storage bin, an elimination disc is arranged above the supporting disc, and the screening area is arranged in the screening area. The top end of the elimination disc is fixedly connected with a primary selection disc, a to-enter area is arranged between the elimination disc and the primary selection disc, a collection area is arranged between the supporting disc and the elimination disc, falling holes are formed in the elimination disc and the primary selection disc, and the bottom end of the storage bin is fixedly connected with a seeding pipe. Through cooperation of the elimination disc and the primary selection disc, seeds can be screened during sowing, so th