This paper investigates the crushing behavior of thin-walled metal foam-filled square tubes under axial quasi-static compression load. The main aim of this study is to quantify the dynamic crush load and energy absorption response of foam-filled tapered thin-walled square tubes under axial quasi-static compression load. Several specimens of tubes were manufactured from carbon steel sheets with different thicknesses and lengths. The cross-section area of a tube is constant (100 cm2). An analytical in-extensional collapse mode was used to predict a mean load carrying capacity , energy absorption. Load-displacement curves were obtained experimentally and two types of collapsed modes were observed. It was noted that the energy of the crushing was absorbed by fixed , included and traveled plastic hinges. Mean load carrying capacity and energy absorption were found to increase with increasing ( t / L ) ratio.