Edgewise crush strength of corrugated cardboard was tested using un-waxed edge method and edge reinforced method. The advantages of the two methods in fitting for the cardboard compression strength prediction were analyzed and compared using SPSS software. The fungibility of the two methods in cardboard compression strength prediction based on Makee formula was proved empirically and theoretically using Eulerian elastic compressive deformation theory. It was concluded that when using the Kellicutt formula to calculate the compression strength, the fit statistics of the predicted compression strength with lab test readings is higher when replace the edge crush strength with the integrated ring crush of base paper.