生物的进化使得生命系统内的一些过程变得复杂有趣。进化过程中由于自然的选择作用，细胞内部的分子相互作用会在特定网络调控下出现一系列的稳定演化过程。细胞是生物体的基本结构单位和功能单位，而细胞周期则是保证细胞正常进行生命活动的基本过程。本文以芽殖酵母为研究对象，探究细胞周期调控网络中的动力学性质。通过建立布尔模型并分析其动力学性质得出：在细胞周期循环过程中，动力学演化轨迹状态图中会出现大吸引子即蛋白质的状态会演化到稳定的状态；同时演化轨迹也会呈现出明显的汇聚路径。又经过对比随机网格得出细胞周期的全局稳定性不是偶然事件。从而得到细胞周期调控具有鲁棒性的结论，并为理解生物进化论提供了理论基础。

The biological process in living system is complex but interesting due to the evolution. Since the natural selection, the molecular interactions inside cells can play a kind of stable and wonderful show. Considering cell is the basic unit of structure and function, cell cycle is the basic process to ensure the ordinary activities. So we study the dynamic properties in the budding yeast cell cycle network by building a Boolean model, and make some conclusions：The biological stable state, is a global attractor of the dynamics; the biological trajectory, and the cell-cycle sequence of protein states, is a globally attracting pathway of the dynamics. Then the paper compare the random network to find it’s not a case by chance, means the cell cycle has the robustness regulation. Indeed robustness may provide us with a handle to understand the profound driving force of evolution.