研究了一个两能级原子处于充满了类克尔（Ｋｅｒｒ）介质的高Ｑ腔里与单模辐射场多光子相互作用的系统中，原子能级布居数的时间演化特性以及原子的偶极压缩效应。着重讨论了类克尔介质与单模辐射场作用的耦合强度χ和失谐量Δ对原子系统行为的影响。 In this paper, we investigate the time evolution of a two-level atom in the multi-photon interaction in a high-Q cavity filled with a Kerr medium and a single-mode radiation field. effect. The effects of the coupling strength χ and the detuning Δ on the atomic system behavior of the Kerr medium and the single-mode radiation field are mainly discussed.