Abstract: Aimed at high tailings grade,high water consumption that exposured in process flow of hematite, Yanshan Iron Ore made an analysis and study of hematite ore properties,the design of process flow and commissioning status,at the same time,also organized a flow sheet investigation about every process and allprocess.Based on the investigation analysis results,some measures such as adjusting the location of strong magnetic separation in the process flow,reducing the allocation quantity of gravity separation and thickening equipment,reasonably controlling the grinding particle size and the magnetic field intensity of strong magnetic separation,decreasing the grade of tailings by recleaning were proposed.These measures made Yanshan iron ore realize further optimize of hematite process flow,decrease the grade of tailings by above 2.49percent and increase both the technical index and economic benefit of concentrate process.