The invention relates to the technical field of metallurgy, in particular to a smelting method for low-sulfur steel. The smelting method includes the processes of converter smelting, steel slag discharging and washing desulfuration, KR desulfuration treatment, RH refining and continuous casting. By means of the smelting method for the low-sulfur steel in the embodiment, the technical problems that in the prior art, production processes for low-sulfur steel are complex, and the production cost is high are solved, the technical processes for the low-sulfur steel are simplified, the quality of the low-sulfur steel is improved, and the production cost of the low-sulfur steel is reduced.