在信息服务机构林立、信息技术不断更迭、用户需求和偏好不断变化的高度动态的环境下，公共图书馆尚存在服务内容宽泛、服务边界模糊所造成的困惑，表征空间这一概念有助于公共图书馆剖析立身之基并彰显其在国家与社会发展中的地位。根据公共图书馆发展的历史背景及其所要传达的意义与价值，其在理念、功能与形式方面分别表征着公平、记忆与现代性，并且在数字文明时代，公共图书馆的这三种表征也将有新的发展趋势。

In a highly dynamic environment with numerous information service institutions, continuous changes in information technology, and constantly changing user needs and preferences, public libraries still have confusion caused by broad service content and fuzzy service boundaries. The concept of representational space helps public libraries analyze the foundation of their existence and highlight their position in the development of the country and society. According to the historical background of the development of public library and its significance and value to be conveyed, it represents fairness, memory and modernity in concept, function and form, and in the era of digital civilization, these three representations of public library will also have new development trends.