The invention discloses a large blast furnace mixed injection meager lean coal application method. According to the component weight ratio, anthracite: bituminous coal: lean coal is 70-72:10-12:20-21.The method has the beneficial effects that the deficiency of excellent coal resources is relieved, and blast furnace normal production needs are ensured; the enterprise production cost is reduced, and energy-saving consumption-reducing aims are achieved; environment pollutions caused by coking are reduced, and the social environment-friendly benefits are achieved.