在完全放松进入规制条件下,建立一个进入者决策的两阶段模型,并运用实物期权方法研究进入者的进入决策,给出柔性条件下的进入决策规则。研究显示,进入者是否进入取决于观察到的市场需求状态与门阈状态的对比关系,而门阈状态值大小又取决于进入成本和在位者规模。所以,完全放松进入规制不仅有利于改善电信业的竞争状态,而且还因盲目的网络重复建设得到避免而有利于电信业技术的进步。Under the entire entry deregulation, a two-stage model of entrant decision is established. Researching the entrant decision by utilizing the real-option approach, the entry decision rules with flexibility are given. The result shows that the entrant’s entry is decided by the comparative relationship between the market demand and the threshold, and the value of threshold depends on the entry cost and the scale of the incumbent. Therefore, the entire entry deregulation not only optimizes the telecommunication industry competition status, but also promotes the telecommunication industry technology.