初始纠缠的双原子中的一个原子与高Q腔中的单模光场发生相互作用，我们分析了在真空场、粒子数场及Kerr介质环境下两原子间的纠缠演化特性，发现在真空条件下两原子的纠缠有规则的作周期性变化；在粒子数场中两原子的纠缠度严重衰减，演化过程中达到最大纠缠的几率大大减少，且在一定时间段内纠缠消失，产生纠缠猝死现象，随着粒子数增加，纠缠猝死区域不断增加，对两原子的纠缠造成极大地破坏；但当系统在Kerr介质环境中发生相互作用时，发现能有效消除粒子数场中产生的纠缠猝死现象，在一定条件下能使两原子间的纠缠度在高值状态窄幅震荡。

One of the initial entangled two-atom interact with a high-Q cavity in the single-mode light field. Using the partially transposed matrix of negative eigenvalues (negativity) method we analyse the two-atom entanglement characteristics in a vacuum field, Fock state field and Kerr-media environment, and find that the entanglement of two atoms periodically oscillates in vacuum field, while in the number of particles field entanglement sudden death phenomenon occurs. When the atomic system interacts with the Kerr medium, we obtain that the phenomenon of entanglement sudden death can be eliminated in the particle-number field, and the entanglement of two-atom oscillates aroud a high-value state under certain conditions.