The invention discloses a method for smelting weathering-resistant steel by using waste copper and a nickel plate as a vanadium-extraction coolant. The method comprises the following steps: 1) vanadium extraction with vanadium-titanium containing molten iron; 2) preparation of initial weathering-resistant steel; and 3) smelting of the weathering-resistant steel. The method fully uses the characteristics of the coolant added in a vanadium extraction process, Cu and Ni are alloyaged to the vanadium extraction process in advance. The waste copper and the nickel plate are used as the coolant to reduce the consumption of oxidized scale and pellet during vanadium extraction, under condition of same semi-steel component and temperature, the scrap addition of a steel-making converter is increased,influence of the copper plate and the nickel plate on the temperature reduction are not considered, the scrap ratio is increased, and the comprehensive cost of vanadium extraction and steel making isreduced. The waste cooper substitutes high-quality electrolytic copper plate for smelting the weathering-resistant steel. The steel-making comprehensive cost can be reduced by 21.62-52.86 yuan/t by using the method provided by the invention.