To coordinate with the ongoing research on the high-low corrugated medium board with secondary impact resistance, a molding device for making high-low corrugated medium paper was designed and the feasibility of corrugated medium molding was verified, adopting the corrugated roller gear parameters in the corrugated roller group patent technology. The pressure value required for bending forming of the paper board was calculated and the motor power was determined on the basis of the determined parameters such as test board dimensions, bending deformation and yield strength. And the transmission system and other components were designed according to the test rolling speed. At a motor power of 0.1 kW and a rolling velocity of 3~15 r/min, the corresponding VVVF frequency was 6~30 Hz, and the molding device reached the design requirements of the drawing after assembly debugging. The molding device proved the feasibility of high-low corrugated medium production, but it had an inherent defect due to the different acting points and directions of the force between the high teeth and low teeth of the upper and lower corrugated rollers during rolling, leading to slight periodic bouncing of the upper corrugated roller and thus insufficient molding.