中文摘要：

以世界城市网络理论为基础,以国际友好城市数据作为分析对象,从社会文化关联的角度研究世界城市网络的结构与动力。首先梳理了建立国际友好城市的意义,认为国际友好城市是次国家行为体参与国际合作的一种重要方式。采用1973年到2014年国际友好城市数据,按照尺度层次对洲、国家、省（自治区、直辖市）的国际友好城市的发展演变作了梳理,认为新的世界城市联系更加依靠全球经济发展过程;国际友好城市体现的城市联系内外分布不均衡;结好城市的等级之间基本呈对应关系,同等级的城市间建立更多城市联系。最后总结和探讨了影响我国友好城市建立的因素,对我国未来国际友城关系的发展提出展望。

英文摘要：

Based on the city network theory, this paper research social and econonfic connection of world city through the data of International Sister Cities （ISC, for short）. Firsdy, the author summarize the significance of ISC, and consider ISC as one of the main forms of Sub-national Governments, participating in international cooperation. According to ISC data from 1973 to 2014, this paper analysis development and evolution in the fight of .scale of continents, countries and provinces （autonomous region, municipalities directly under the Central Government）. As a result, the new world city connections more rely on global economic procession. The distribution oflSC coimectiom is unbalanced internally and externally. More connections between city of same grade. Finally, the author discuss influencing factors and prospect of China＇ s ISC.