The type, morphology and distribution of the inclusion in tire cord steel at each operation position of LD-LF-VD-CC production process were investigated. The result shows that it is bad for desulfurization to add refining slag during LD tapping, but it provides conditions for pre-slagging and inclusion modification in the following process. In order to gain a good plasticity of inclusion, neutral slag was used during refining process, it is forbidden to use bauxite at adjusting slag process, and the basicityof final slag was required at 0.9～1.1. Through analyzing the large inclusion, it can be found that most composition of inclusion is SiO2-Al2O3 and a small portion include Na2O and K2O. It should be involved refractories. Therefore, it is very important to use high quality refractories and control temperture of the molten steel and casting speed.
