：公共危机事件中的虚假新闻会引起社会恐慌，影响社会安定，但当前国内仍缺乏针对公共危机事件中虚假新闻的防范与教育，图书馆在其中的作用也尚未被重视。文章对虚假新闻的概念进行了界定，分析了公共危机事件中虚假新闻的产生原因及影响，基于对美国图书馆在虚假新闻防范与应对的案例研究，提出了我国图书馆应对虚假新闻、参与虚假新闻治理的借鉴经验及建议。

Fake news in public crisis events will cause social panic and affect social stability. However, there is still a lack of prevention mechanics and education practice for fake news in public crisis events in China, and the role of libraries this kind of function has not been taken seriously. Firstly, the concept of fake news was defined, the causes and effects of fake news in public crisis events were analyzed, and then the cases of American libraries in the prevention and response to fake news were studied and experiences were extracted from them. Their practice provides reference for Chinese libraries to respond to fake news, participate in the governance of fake news, and develop related services.