Abstract: Low-temperature NH₃ -SCR is an efficient technology with high economic value and broad application prospect for transforming NO_x into N₂ below 200 ℃． Great attention has been paid worldwide to develop low-temperature SCr denitration catalysts with high activity and strong resistance to sulfur dioxide and water，which is also crucial for the development and application of low-temperature SCr technologies． Molecular sieves are of ex-cellent adsorption performance，suitable surface acidity，good shape selectivity and flexibility，as well as the capa-bility of introducing transition metal elements． This paper reviews the research progress of molecular sieves used in denitration catalysts for low-temperature NH₃ -SCR，and emphasizes the low-temperature selective catalytic reduction performance，the sulfur dioxide and water resistance，as well as the reaction mechanism of ZSM-5，SAPO-34，SBA-15，MCM-41 and beta molecular sieve． Moreover，the application of calculating simulation to the design of molecular sieve catalysts is introduced，some problems existing in the application of molecular sieves to low-tempe-rature NH₃-SCR are analyzed，and the future research trend is also pointed out．

Key words: selective catalytic reduction, low-temperature denitration, catalyst, molecular sieves, transition metal