Air-aspiration type indented seed-metering device

The utility model relates to an air-aspiration type indented seed-metering device, which consists of a seed-metering device shell, a seed chamber, a seed cleaning brush, a seed-metering disc, an air cut-off stop block, a secondary seed feeding ring belt device and a shaft, and is characterized in that the seed-metering device shell comprises a front end cover, a cover plate, a waist belt and an outer fixed disc; wherein the shaft is arranged on the seed-metering device shell, the seed-metering disc is positioned through the shaft and is fixed on the outer fixed disc, the front end cover is positioned above the seed-metering disc, the gas cut-off stop block is positioned in a negative-pressure gas chamber of the seed-metering disc, the seed cleaning brush is arranged on the inner side of the front end cover, and the secondary seed feeding ring belt device is welded on the inner wall of the belt. The seeder can be divided into a seed taking area, a seed clearing area, a seed carrying area and a seed feeding are