Si-Al-Ba ferroalloy have strong ability of deoxidizing and desulfurizing, to change the inclusions in the form of steel products, refined grains, improve the machining performance and improve steel quality of steel plays an important role. Use Si-Al-Ba ferroalloy is more significant effect than Aluminium block and ferrosilicon single ferroalloy.To improved the utilization ratio of ferroalloy ,and cost the reduction has good economic benefit.