NOxis a main source of air pollution and has been listed as gross amount controlled object during the 12th Five-Year period. The generation principle of NOxis discussed in this article. Low NOxburning technologies domestic and abroad

including high temperature low oxygen combustion

fuel reburning

low NOxburner

air graded burning and gas recirculation

are mainly introduced. Each are summarized and analyzed in the end of the article

providing reference to optimal design and transformation of burning systems in future.