The principles and characteristics of sintering flue gas denitration industrialization technologies were analyzed, and in view of the existing problems of denitration technology, 8-week denitration experimental research was carried out in Taigang 450 m² sintering machine by using a low-temperature SCR denitration pilot-scale test equipment. The results indicate that, the SCR catalysts exhibit high treatment capacity and stable catalytic activity, and the flue gas denitration efficiency of SCR system at 150 ℃ is more than 85%, the average NO_x emission concentration is 32.27 mg/Nm³, and during the experimentation period, no obvious deposition of ammonium salt and attenuation of catalytic activity are found. The estimated operation cost of low-temperature SCR denitration system is about 4.68 yuan/t-s, which excludes the cost of heating of desulphurized flue gas to a temperature of 150 ℃. Reducing activity temperature of catalyst to 110 ℃ and improving sulfur resistance and dioxin degradation capability of catalyst are the most important topics in future research.