The invention discloses a blast furnace material distribution adjusting method by reasonably using multi-grade sintered ore. The method comprises the steps of sieving standard ore according to particle sizes of 3.5-5 mm, 5-10 mm, 10-25 mm and greater than 25 mm to obtain standard samples with different particle size grades, and obtaining the change amount of each particle grade before and after reductive pulverization test of the standard samples and recording B0 as smaller than 3.5, 3.5-5, 5-10, 10-25 and greater than 25; and in the same way, obtaining the change amount of each particle gradebefore and after the reductive pulverization test of the evaluation samples and recording B1 as smaller than 3.5, 3.5-5, 5-10, 10-25 and greater than 25. By evaluating the reduction and pulverizationperformance of the sintered ore with different grain sizes and the change rule of each grain size after pulverization, a reasonable adjusting method of sintered ore distribution in blast furnace is provided, the blast furnace smelting process can be obviously improved, and the consumption can be reduced; and the method is easy to implement and has a wide application prospect.