The invention relates to the technical field of pressurized water reactor nuclear power plants and discloses a recycling method for radioactively-contaminated scrap iron and steel generated by a pressurized water reactor nuclear power plant. The recycling method comprises the following steps: transporting the radioactively-contaminated scrap iron and steel generated by the pressurized water reactor nuclear power plant to a smelting plant for smelting and decontaminating, and casting molten steel obtained by smelting the radioactively-contaminated scrap iron and steel to form a shielding container; using the shielding container for fixed treatment of a radioactively-contaminated high-dose-rate filter element of a waste water filter for shielding the radioactively-contaminated high-dose-rate filter element of a waste water filter. According to the method provided by the invention, the radioactively-contaminated scrap iron and steel can be recycled for manufacturing the shielding container; the shielding container is used for the subsequent fixed treatment of the radioactively-contaminated high-dose-rate filter element of a waste water filter, replaces heavy metal lead and can be used for shielding the radioactively-contaminated high-dose-rate filter element of a waste water filter, so that radioactive contamination of the filter element to the environment is avoided, better environment friendliness is realized, and the cost is reduced.