环境库兹涅兹曲线（EKC）假说对于探讨环境保护与经济发展之间的关系，寻求经济与环境协调发展，具有指导意义。在分析EKC假说基本概念的基础上，阐述了EKC影响因素、理论发展及实证研究等各方面的研究进展，探讨了该假说存在的问题。最后提出，发展中国家应借助国际贸易的大环境，积极学习发达国家的清洁型技术、政策改革、公众教育和法律体系，力图降低环境拐点，压扁EKC曲线，建立经济、环境的双赢关系。

Environmental Kuznets Curve (EKC) hypothesis has instructive significance to explore the relationship between environmental protection and economic development and to seek the coordinated development of economy and environment. Based on the analysis of the basic conception of EKC hypothesis, the research progress of the impact factors, theoretical developments, and empirical studies of EKC were illustrated in this paper, and the existing problems of the hypothesis were also discussed. Finally, it was noted that under the international trade conditions, the developing countries should study the clean technology, policy reformation, public education, and environmental law system from the developed countries, which can help them decrease the EKC turn point, flatten EKC curve, and seek for win-win relationship between economy and environment.