A new point of view in vehicle crash box is proposed by Contacted 2 Pipes structurce, which is a new development method based on the principle of shear-deformation, shear-broken of welding, structural design, method of TRIZ and evaluations. As a result of the application of new crash box, this paper classifies increased absorption energy of collision, deformation of pipes, and shears broken force in welding, optimized structural design, and enhanced performance of RCAR.