A feeding paper device at differential speed in a corrugating machine includes a primary corrugating roller (7), a secondary corrugating roller (6) and a feeding paper roller (2) at differential speed, which are mounted on a wall. A chain wheel (3) is mounted on the feeding paper roller. A chain wheel (5) for secondary corrugating roller is mounted on the secondary corrugating roller. Two wheels connect together through a chain. The paper between the feeding paper roller and the secondary corrugating roller has no tension due to said rollers feeding at differential speed. So the paper is fed evenly into the corrugating roller at a state of having no tension and wouldn't be crushed or ruptured when shaped.
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