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本文对具有放牧率的两种群竞争扩散模型的概周期解进行了讨论，采用比较原理、Schauder不动点定理及Lvapunov函数方法，得到了空间齐次概周期解的存在性和稳定性的一些简捷的充分条件．
In this paper, we study the almost periodic solutions of two species competitive diffusion models with grazing rate. By using the principle of comparison, the Schauder fixed point theorem and the Lvapunov function method, we obtain some simple and sufficient solutions for the existence and stability of homogeneous homogeneous periodic solutions condition.