The work aims to research the influence of entrapped air on the static cushioning performance of honeycomb paperboard. The static compression test was used to study the cushioning property of different percentages of holes of honeycomb paperboard. Curve of the stress-strain was achieved by the static compression test. With the increase of the percentages of holes, the plateau stress of honeycomb paperboard decreased and the honeycomb paperboard was easier to be deformed by pressure, and the thinner dense layer was formed by the curve of the stress-strain of different percentages of holes. When the percentages of holes was 0% and 100%, the curve of stress-strain had obvious changes, and entrapped air was not influenced by thickness to length ratio and aperture size. In conclusion, under static compression, the stress of honeycomb cardboard is significantly enhanced due to the entrapped air. The various stages of the stress theory formula are deduced under the influence of air by the static compression test. That provides a certain theoretical method for the research of its cushioning performance.