With the development of automobile industry, surface roughness of steel sheet for automotive use is one of the most important control items. In this paper, aimed at a new type of roll surface roughness profile (slight protuberance similitude of spherical cap) optimization designed by tribology method, we present a new principle of laser texturing. In the experiment, a pulsed laser beams generated by Nd:YAG laser is adopted to process the roll surface. According to the analysis and investigation of the new principle of laser texturing, the laser parameters are primely selected and matched. Consequently, the surface roughness profile and size have been successfully obtained. Furthermore, we measure and analyze the surface roughness hardness. The results show: the surface roughness has higher hardness rather than matrix. In addition, the influence rules between pulsed laser parameters and main profile parameters of roll have been analyzed and investigated.