通过对常用脱硫剂脱硫反应和性能的介绍，指出研制铁水复合脱硫剂的必然性，并从热力学的角度分析了复合脱硫剂的构成。大量的研究和应用表明，铁水脱硫剂材主要朝两个方向发展：一是以石灰基为主的复合脱硫剂；二是配加石灰、电石、焦炭等的金属镁脱硫剂。 By introducing the desulfurization reaction and performance of the commonly used desulfurizer, the necessity of developing the hot metal composite desulfurizer is pointed out, and the composition of the composite desulfurizer is analyzed from the thermodynamic point of view. A large number of studies and applications show that hot metal desulfurization material mainly in two directions: First, based on lime-based composite desulfurization agent; the second is with lime, calcium carbide, coke and other metal magnesium desulfurization agent.