Abstract: According to the fact that it is difficult to achieve multiple ladles continuous casting for the steel bearing sulfur and aluminum in Shijiazhuang Steel Co.，Ltd.，the smelting technology for improving the cleanliness and castablity with LD→LF→VD→CC is systematically studied for this steel. The following technologies arc developed: high carbon control in the end of converter, Al-Si-Al deoxidation type during steel tapping，special refining slag for this steel，variation of argon blowing with the refining time，protective casting with repressing oxidize when continuous casting. The results show that，it can casting more than 8 heats. After rolling bars，the total oxygen content is lower than 12×10-6，the inclusion ratio decreases to 0.06 % from 2.3%，the UT qualified rate increases from 65% to 93.5%.

Key words: Steelmaking, S-Al-bearing Steel, Inclusions, Secondary Refining, Continuous Casting