The soft droplet performance of sinter with different basicity, SiO₂, Al₂O₃ and MgO content is studied. By analyzing and summarizing the technical parameters of sinter and actual operating parameter data of blast furnace used by Anyang Steel and various large blast furnaces in China, it can be drawn that when the SiO₂ mass fraction of sinter is about 5%, alkalinity is about 1.95, CaO mass fraction is not more than 10% and MgO mass fraction is not more than 2%, the soft droplet performance of sinter is better, the droplet temperature is about 1 460 ℃, the melting interval is about 160 ℃, the soft melt interval is about 260 ℃, and the blast furnace can maintain a long-term high-production and low-consumption forward state.