The invention discloses a method for recycling steel-ladle hot-state casting residues by means of a converter, and belongs to the technical field of ferrous metallurgy. The problem that the casting residues and self waste heat of the casting residues cannot be effectively utilized in the prior art is solved. The method comprises the following steps that the hot-state casting residues remaining inthe steel ladle after molten steel pouring are returned to the converter steelmaking process for recycling and utilization, and the alkalinity of the hot-state casting residues ranges from 6 to 8. According to the method, the liquid-state continuous casting residues are used in an energy-saving, environment-friendly, effective and stable manner for realizing the heat-state recycling of the castingresidues; and the consumption of steel materials can be reduced, the sensible heat of furnace slag can be effectively utilized, the smelting efficiency can be improved, the steelmaking production cost is reduced, the quality of molten steel is improved, and the environment-friendly benefit is obvious.