The embodiment of the invention discloses a drying machine used for producing a corrugated paper board. The drying machine comprises a heating plate, two air exhausters, a cotton fabric belt and a conveyor belt. The heating plate is rectangular, a plurality of wind grooves are symmetrically formed in the two sides of the upper surface of the heating plate at equal intervals, and the wind grooves are perpendicular to the long edge of the heating plate; the two air exhausters are symmetrically arranged on the two sides of the heating plate, the air exhausters are connected with one ends of air exhausting pipes, and the other ends of the air exhausting pipes are connected with the wind grooves through connectors; the cotton fabric belt is arranged on the heating plate, the two sides of the cotton fabric belt are fixedly connected with the connectors, and a containing space is formed between the middle of the cotton fabric belt and the heating plate; and the conveyor belt is arranged to penetrate through the containing space. According to the drying machine used for producing the corrugated paper board, the wind grooves are additionally formed, water vapor in the containing space is exhausted through the air exhausters, the discharging efficiency of the water vapor is greatly improved, under the premise that the production efficiency is not reduced, the corrugated paper board is quickly dried and formed, and meanwhile the effect of reducing energy consumption and emission can be further achieved.