：文章解读了《2020年美国图书馆状况报告》的主要内容，引介并评价了2019年美国公共图书馆、大学图书馆、中小学图书馆在发展过程中的创新举措以及面临的问题与挑战，揭示出了美国图书馆界强化社会包容与社会责任、协助解决社会问题的基本发展策略以及将图书馆服务与社会广泛联系的创新思路。研究发现，美国图书馆界过去一年的服务实践无一不与社会责任相联系，深度参与社会发展、广泛与社会各界合作、针对有关社会问题适时发出自己的声音已成为其实现自身可持续发展的重要途径。

The author interpreted the main content of the report, introduced and evaluated the innovations and problems that American public, university, and school libraries faced in 2019, and revealed that the basic developing strategy of American libraries is to strengthen social inclusion and responsibility to help solve social problems and their innovating idea is to connect extensively with society. It was found that all service practices of American libraries in the past year were connected with social responsibility. In order to develop continuously , the library has to participate in social development, cooperate extensively with community, and timely express its opinions about social problems.