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Four cross sections of 6082 aluminium alloy anti-collision beam were designed for one car.Based on the crash simulation analysis using LS-DYNA,the deformation and energy absorption parameters of 6082 aluminium alloy beam were obtained.The results of crash simulation for a rear low speed impact indicated that the invasion of the collider was minimum and the effect of energy absorption was optimum,when the tangent angleof cross section between arc rib and horizontal plane of the anti-collisionbeam was twenty degree.Finally,the pendulum testrevealed that the performance of this 6082 aluminium alloy beam satisfied with performance requirements,when the tangent angleof arc rib cross section of the anti-collision beam wasdesigned to the twenty degree.