From the effects of the air in the cellular hole and the slotting craft, theoretically forecasts and analyzes the cushioning mechanism of honeycomb paperboard. To investigate their influences on the cushioning performance, makes static compress experiments on honeycomb paperboard (about 30mm) with three slotting crafts. The results show that: using the slotting process can reduce initial yield stress of the honeycomb paperboard and improve cushioning property in plastic platform area, which are consistent with the theoretical prediction.