Ferro-Silico-Aluminum is a deoxidizer used in steelmaking production. It improves the shape of inclusions and reduces the content of gas elements in molten steel. It is an effective new technology to improve steel quality, reduce costs, and save aluminum. It is especially suitable for the deoxidation requirements of continuous casting molten steel. Practice has proved that it not only meets the deoxidation requirements of steelmaking, but also has desulfurization performance and has the advantages of large specific gravity and strong penetrating power.