Objective To study the effective method of controlling the phenomenon of strips on corrugated board in the process of post-printing. Methods The variation characteristics of print density and gloss under different pressure values and the relationship between the measured pressure value and the set printing force were experimentally studied using IGT F1 and gloss meter. The press distribution over single flute width on corrugated boards in the printing process was simulated using finite element simulation method. Results The print density rapidly increased with the printing force until the printing force reached about 125 N, and reached a plateau when the printing force reached about 250 N, but the print gloss was not affected by the printing press. The measured pressure value was linear with the set printing force. And the pressure on the peak of flute was bigger than that on the valley of flute in the pressure distribution curve. Conclusion The strips were caused by the variation of print density instead of print gloss. And the variation of print density was mainly caused by the variation of the printing pressure.