Sinter production has the characteristics of high energy consumption and large pollutant emissions, and is the key process of energy conservation and pollution reduction in the iron and steel industry. On the basis of reviewing the main factors affecting the return fines ratio of modern sintering enterprises in the "double carbon" article published in China, the technical measures to reduce the return fines ratio are mainly researched, and the new technologies on effectively reducing the return fines ratio are prospected. The analysis points out that, the raw material conditions and chemical composition, process parameters, equipment and management level are the main factors affecting the return fines ratio at this stage. At present, the technical measures to reduce the return fines ratio mainly include optimizing the raw material conditions and mineral structure, developing intelligent ore proportioning technology, optimizing fuel conditions, improving the bed thickness of material, optimizing process parameters, strengthening equipment management and reducing the air leakage rate. At the same time, it is points out that accelerating the research and development and promotion of hydrogen-rich and oxygen-enriched injection technology on the sintering charge level, and further developing effective returns and direct smelting technology, can provide new ideas for effectively reducing the return fines ratio.