The invention discloses a drying machine for grain production. The drying machine comprises a protective outer shell. A grain drying chamber is arranged on the inner wall of the protective outer shell. A baffle is fixedly connected to the inner wall of the protective outer shell. A first fixed block and a second fixed block are connected to the outer wall of the protective outer shell. A fixed groove is formed in the first fixed block. A connecting block is connected to the inner wall of the fixed groove. A fixed frame is fixed to the other end of the connecting block. A fixed motor is arranged at the end, far away from the first fixed block, of the fixed frame. The fixed motor is connected with the second fixed block. According to the drying machine for grain production, the external shape of the connecting block is matched with the external shape of the fixed groove, so that by the adoption of the design, it is convenient for the first fixed block to be connected with the connectingblock through the fixing groove formed in the connecting block, so that the connecting block can conveniently drive the protective outer shell arranged at one end of the connecting block to rotate, and then the grain in the protective outer shell can be conveniently dried in an overturning manner.