本文以内容表达实体为研究对象,探讨RDA中内容表达实体概念的引入及对其属性的描述为书目记录带来的变化,具体体现在内容类型记录方式的变化、构建代表作品的规范检索点的变化以及构建代表内容表达的规范检索点的变化。并分析了变化的具体原因,及对书目记录带来的积极的影响。 This paper takes the entity of content representation as the research object and explores the introduction of the concept of content expression entity in RDA and the change of the description of its attributes for the bibliographic record, which is embodied in the change of the content type recording mode, the construction of the standardized retrieval point of the representative works Change and the construction of the representative content expression of the normative search point changes. And analyzed the specific reasons for the change and its positive impact on bibliographic records.