Grain drying systems

The invention discloses a grain drying system which comprises a grain storing chamber, a grain conveying mechanism and a grain storing mechanism. The grain storing chamber conveys grain into the grain storing mechanism through the grain conveying mechanism. The grain conveying mechanism comprises a plurality of lifting machines for conveying the grain from a lower position to a higher position. The grain storing mechanism sequentially comprises a wet grain barn, a drying tower and a dry grain barn. The drying tower is connected with a hot air stove through a hot air pipe to convey hot air for the drying tower. The grain drying system dries the grain and achieves the purposes of long storing time, low cost and even drying.