Energy-saving and emission reduction（help me correct the mistakes please！thank you very much） By doing experiment, it can be learned that when fuel ratio is high, proportion of the nitride gas is increasing, but the increase is not significant. When the fuel ratio is 20%, he total composition NOx emissions increased by only 8.32% than the ratio of the fuel ratio is 5%. If the sintering flue gas can be reuse, nitrogen oxide emissions of the sintering process can be reduced effectively, so we can come to a conclusion that the pre-reduction has no big effect to nitrogen oxide emissions for sintering. With the increase of sulfide, the fuel ratio decrease, when the fuel ratio was 20%, the sulfur emissions is less 34.5% than the ratio of the fuel ratio is 5%. This indicates that the pre-sintered is beneficial for sulfide emissions reduction. 　　　This study shows that pre-reduced iron sintering not only can reduce energy consumption effectively, but also can reduce the emission of pollutants, so the development of pre-reduction sintering has important significance for improving the carbon efficiency and reducing energy consumption for per ton of steel production, and it also is beneficial for reducing production costs.