本文详细综述了用于Ｎ２Ｏ直接分解催化剂的研究进展情况。Ｎ２Ｏ分解催化剂大致可以分作以下几类，即：（１）稀土氧化物及相关氧化物；（２）复合金属氧化物；（３）沸石催化剂；（４）水滑石热分解产物催化剂。前两类催化剂注重探讨催化分解Ｎ２Ｏ的机理；而后两类催化剂主要研究催化分解Ｎ２Ｏ的活性。 This article reviewed the progress of the research on the catalyst for the direct decomposition of N2O. N2O decomposition catalyst can be roughly divided into the following categories, namely: (1) rare earth oxides and related oxides; (2) composite metal oxides; (3) zeolite catalyst; (4) hydrotalcite thermal decomposition catalyst. The first two types of catalysts focus on the mechanism of catalytic decomposition of N2O; the latter two types of catalysts mainly study the catalytic decomposition of N2O activity.