Abstract: Steel slag is the waste residue discharged in the process of steelmaking, and CO₂ is the main greenhouse gas. This paper analyzed the composition and characteristics of steel slag from the perspective of preparing carbonized products from steel slag, and the reaction mechanism and influencing factors of carbonized products preparation technology was also discussed respectively. C₂S, C₃S and CaO in steel slag could fix CO₂ effectively. The carbide product was prepared by storing CO₂ in steel slag, which was conductive to realize the effective utilization of secondary resources. Based on the current research status of steel slag product preparation technology, the development prospect of this technology and the direction to be further studied were put forward.