The invention discloses a corrugated board core paper processing device. The corrugated board core paper processing device comprises a conveying assembly and an extrusion forming assembly, wherein theconveying assembly comprises a conveying element, the conveying element comprises a first electric sliding table, a first supporting plate, a second electric sliding table and a second supporting plate, the first supporting plate is fixedly connected with a sliding block of the first electric sliding table, the second supporting plate is fixedly connected with a sliding block of the second electric sliding table, the extrusion forming assembly comprises a sinusoidal waveform upper pressing block and a sinusoidal waveform lower pressing block, the first electric sliding table is located on theleft side of the sinusoidal waveform lower pressing block, the second electric sliding table is located on the right side of the sinusoidal waveform lower pressing block, the top surface of the firstsupporting plate is located between the sinusoidal waveform upper pressing block and the sinusoidal waveform lower pressing block, and the top surface of the second supporting plate is located between the sinusoidal waveform upper pressing block and the sinusoidal waveform lower pressing block. Compared with the prior art, the corrugated board core paper processing device has the advantage that an operator completes feeding through the conveying assembly, so that potential safety hazards are avoided.