Abstract: In order to study the surface micro texture process of ultrasonic rolling, 45 steel sample is selected as the research object. The effects of process parameters including rolling ball diameter, step length, static pressure and feed speed on texture morphology and depth are analyzed. Single factor experiments are carried out on various surface properties of the textured workpiece. The results show that the ultrasonic rolling process can produce stable texture on the surface, and the diameter and step of the rolling ball have a great influence on the surface morphology. The 8 mm rolling ball with 0.2 mm step can obtain more obvious texture morphology. The increase of static pressure can effectively improve the surface hardness and grain refinement, while the effect of feed rate on surface properties is more complex.