公共图书馆的公众认知情况，反映图书馆的“场所”价值，对图书馆的发展具有重要意义。为了更好地了解国内外公众对图书馆的需求，把握图书馆行业的发展状况，为图书馆发展提供参考，文章以“IFLA绿色图书馆奖”入围公共图书馆为研究样本，借助python工具对谷歌地图和大众点评网上相关图书馆的在线评论内容进行爬取，并分别从高频词分布、LDA模型生成的主题情况、关键词变动、情感分析等四个维度展开系统分析。结果显示公众对公共图书馆的讨论是多方面、有偏向性的，整体是积极的情感态度。但国内外公众关注的侧重点不同。鉴于此，图书馆可以在馆藏资源、公共文化服务、空间环境、设施设备、图书馆员工上进一步加强建设，并抓住自身优势，在把握公众需求的基础上相互借鉴，提升服务质量，促进图书馆行业发展。

The public perception of public libraries reflects the value of public library as "place", which is of great significance to the development of libraries. In order to better identify the public demand for libraries in China and abroad, and to capture the development of the library industry and provide reference for the development of libraries, this paper will crawl the online reviews of libraries on Google Maps and Public Review with the help of python tools, taking the shortlisted public libraries of "IFLA Green Library Award" as the research sample. In this paper, the content of the online reviews of libraries on Google Maps and Dianping.com is crawled with the help of tools called python, and then is systematically analyzed in four dimensions of the distributions of high-frequency word, the topics generated by LDA model, the changes of keywords, and the sentiment analysis. The results show that public discussions on public libraries are multifaceted and biased, with an overall positive sentiment attitude, but the national and international publics differ in their focus of attention and impressions of librarians, and there are differences in library characteristics. Accordingly libraries can further strengthen their construction in terms of collection resources, public cultural services, spatial environment, facility and equipment situation, and library staff. And according to advantages, learn from each other on the basis of mastering public needs to improve the quality of services and promote the development of library industry.