The work aims to study the effects of surface texture on wear behavior and mechanism of 45 steel under dry friction and starved lubrication condition. The dimple textures with different densities were produced on the surface of 45 steel by laser processing. Ball-on-disk was used on UMT-2 multifunctional friction wear testing machine to study the influence of dimple density on the friction and wear properties of 45 steel under the condition of dry friction and starved lubrication. When the texture density in dry friction was 4%, the friction coefficient of friction pairs was the minimum and the stable friction coefficient reached 0.56. The friction coefficient increased as the texture density rose. As the texture density increased to 16.2%, the friction coefficient reached the maximum and the stable friction coefficient reached 0.72. Under the starved lubrication condition, when the texture density was 4%, the friction coefficient was 0.39 that was smaller than that of non-textured ones. When the dimple density increased, the friction coefficient was larger than that of non-textured ones, but all the values were around 0.43. Under dry friction and starved lubrication conditions, the wear rate of textured samples was smaller than that of non-textured ones. The wear rate firstly decreased and then increased with the increase of the texture density. When the texture density was 8.1%, the anti-wear effect was the optimum. The surface texture can collect abrasive particles and store lubricant, thus providing good anti-friction effects.