In order to realize the rational utility of resource， the third blast furnace of Laisteel implemented the mixed injection of bituminous coal and anthracite. By raising air temperature， increasing oxygen， heightening the top pres- sure， strengthening the management of furnace， optimizing burden and a series of other operations. A lot of great results were got， the ratio of injection coal steadily increased to 170 kg/t， the ratio of large coke reduced to 300 kg/t and the average ratio of fuel reduced to 515 kg/t.