Method for deoxidizing and desulfurizing molten steel and production method of low-sulfur steel

The embodiment of the invention provides a molten steel deoxidizing and desulfurizing method and a low-sulfur steel production method, and relates to the technical field of steelmaking. The molten steel deoxidizing and desulfurizing method comprises the following steps: adding a rusty steel bar head into molten steel for smelting, and then obtaining a sample from the molten steel; obtaining the oxidation condition of the slag in the sample; and deoxidizing and desulfurizing the molten steel according to the oxidation condition of the slag. Because the added rusted steel bar head contains high oxygen and sulfur, the oxidation condition of the slag can be determined by obtaining a sample from the molten steel and observing the color of the slag in the sample, so that corresponding deoxidation and desulfurization operations are performed according to the oxidation condition, and the oxidation of the molten steel, the slag consumption and the alloy consumption are reduced in time. 本发明的实施例提供了一种钢水脱氧脱硫的方法和低硫钢的生产方法，涉