The invention discloses a large-diameter wear-resistant steel ball. The large-diameter wear-resistant steel ball comprises the following materials in percentage by weight: 0.6-07% of C, 0.95-1.25% of Mo, 0.01-0.02% of Ti, 0.25-0.45% of Si, not more than 0.03% of S, not more than 0.035% of P, not more than 0.2% of Cu, and the balance of Fe. The production of the large-diameter wear-resistant steel ball has the beneficial effects as follows: 1, according to the most advanced international qualification of large-diameter (120-200mm) forged balls, a material superior to domestic high-carbon alloy steel is developed by combining advantages of an existing domestic steelmaking technology and a precious metal mineral resource condition, and the cost can be lower than one fifth, so that the product cost competitiveness is increased after utilization; and 2, a novel, efficient and large-diameter wear-resistant forged steel ball with the leadership in domestic and overseas markets can be produced by combining an existing roll forging steel ball automatic production line with the technology provided by the invention, so that the domestic blank is filled up, and meets the requirements on installation and use of domestic and overseas large-scale ball mills.