中文摘要：

本文从理论层面探讨了制度不完善环境下中国垄断行业的扩展机制。通过不完全信息下的动态模型分析,本文发现,如何赋予规制者合理的目标和激励是其中最为关键的问题。增长型规制者可以有效地规避制度环境不完善带来的信息不完全和棘轮效应,从而带来垄断行业的持续扩展。但同时,增长型规制者又是社会不公平等诸多问题的制度根源。经典规制者尽管可以在一定程度上实现社会公平,但是其对制度环境的要求较为严格,在制度环境约束下,如果不考虑现实情况而直接引入独立规制者,很可能会陷入既损害效率又得不到公平的尴尬境地。

英文摘要：

In this paper we discuss the expansion of China＇ s monopolistic industries under the imperfect institutional environment. We found that a reasonable regulatory goal and motivation are the most critical issues in industrial regulation. A ＂growth regulator＂ can effectively avoid imperfection of institutional environment and ratchet effect caused by incomplete information, resulting in the continued expansion of monopolistic industries. At the same time, it also becomes a source of social inequity. To a certain extent, a ＂ classic regulator＂ could achieve social justice, but its requirements on the institutional environment are more stringent. In institutional constraints, if one does not take into account the realities and introduces an independent regulator directly,one may lose both efficiency and injustice. The reform strategy of monopoly industries must be cautiously and carefully selected.