国际组织之间的发展与合作事关国际发展大局，国际图书馆协会联合会（IFLA）和联合国教科文组织（UNESCO）是国际专业组织和国际社会机构的代表，合作历程悠久。分析其合作历程有助于了解图书馆事业和国际社会的发展，为国际组织之间的合作提供借鉴。文章通过文献和网络调研法，回顾分析了IFLA和UNESCO之间开展合作的缘起，梳理其75年合作间不同阶段的重要事件并进行讨论与展望。75年的实践证明，IFLA与UNESCO之间的合作有着重要意义，二者共同促进了全球合作与发展，推动了国际文化可持续发展，推动了社会多元化的发展。

The development and cooperation between international organizations are related to the overall international development situation. The International Federation of Library Associations and Institutions (IFLA) and the United Nations Educational, Scientific and Cultural Organization (UNESCO) are representatives of international professional organizations and the international community, with a long history of cooperation. Analyzing and understanding their cooperation process can provide reference and suggestions for the development of the library industry and the international community. This article focuses on analyzing the important events between IFLA and UNESCO at different stages over the past 75 years through extensive literature research. The research findings indicate that the cooperation between IFLA and UNESCO promotes international cooperation and win-win outcomes, promotes sustainable development of international culture, and promotes the development of a diverse world.