The invention discloses steel for a wear-resistant steel ball and a rolling machining method of the wear-resistant steel ball, and belongs to the technical field of spherical steel product machining.The steel for the wear-resistant steel ball is characterized in that the wear-resistant steel ball comprises the following primary chemical components of, by mass percent, 0.70-0.78% of carbon, 0.15-0.35% of silicon, 0.80-0.90% of manganese, less than or equal to 0.03% of phosphorus, less than or equal to 0.03% of sulfur, 0.5-0.6% of chromium, less than or equal to 0.25% of nickel and less than orequal to 0.25% of copper. The rolling machining method comprises the technological steps of treatment in a rotary furnace, LF refining, VD refining, continuous casting, straightening, acid pickling,neutralization, rolling, quench tempering, packaging and warehousing, and thus the wear-resistant steel ball is obtained. The production efficiency of the wear-resistant steel ball manufactured by rolling is high and the quality of the wear-resistant steel ball is high; a rolling technology is carried out by a tandem mill, so that the labor intensity of workers is reduced, and the labor environment is improved; and the overall process is automatically controlled, so that the hardness of the wear-resistant steel ball is uniform, the core hardness is high, the percentage of damage is low, and the impact value of the wear-resistant steel ball is high.