介绍以国际大都市图书馆指标体系研究国家社会科学重点课题的研究背景,论述本课题创建国际大都市图书馆指标体系、推进国际大都市图书馆的发展并为其提供重要坐标和参考、拓展中国图书馆事业发展的国际视野和管理与服务中的全球思维的研究目的和研究定位,归纳国际大都市图书馆的十大共同特征为:文化的多样性、文化积淀的丰厚性、数字资源的丰富性、读者服务的跨时空性、馆员队伍的专业化、管理服务的法制化、城市图书馆系统的一体化、机构文化的前瞻性、研究交流的国际化以及市民读者中的高知名度。 This paper introduces the research background of the international metropolitan library index system on key topics of national social sciences, discusses the subject, establishes the index system of international metropolitan libraries, advances the development of international metropolitan libraries and provides them with important coordinates and references, and expands China International Perspectives of Library Development, Globalization of Management and Services, and Its Research Positioning and Induction The ten common characteristics of international metropolitan libraries are: cultural diversity, generous accumulation of culture, enrichment of digital resources Cross-temporal and spatial features of readership services; professionalization of librarians; legalization of management services; integration of urban library systems; forward-looking institutional culture; internationalization of research exchanges; and high popularity among citizen readers.