[目的/意义]通过对PIE-J的系统解析，使PIE-J在中国获得更多的关注与了解，以期电子期刊供应链上的各方合作优化电子期刊元数据，解决电子期刊难以搜寻这个长期困扰各方的问题。[方法/过程]通过归纳、实例分析等方法对PIE-J的制定背景、意义、主要内容、应用情况及其对中国电子期刊展示与标识的启示进行分析。[结果/结论]PIE-J通过简明的语言和形象的例子对电子期刊元数据的标识进行详细指引，可提高开放链接质量，提高使用者对期刊文章的查找效率和准确率，进一步完善与发展电子期刊。在我国目前尚未出台电子期刊标识标准的情况下，中国电子期刊出版商或供应商如能参照PIE-J优化电子期刊元数据，对于提高自身产品的竞争力，促进国内及海外市场的开拓将大有裨益。
[Purpose/significance]This article analyze the system of PIE-J, it hopes that Chinese can pay more attention to it and all stakeholders of the electronic journals supply chain can work together to optimize the electronic journal metadata. It aims at addressing electronic journals searching issues plaguing stakeholders for a long time.[Method/process] This article analyzes the background, significance, main content, application of PIE-J and its enlightenment on the display and identification of Chinese electronic journal through induction, case study and other methods.[Result/conclusion] PIE-J provides detailed guidance on the identification of electronic journal metadata through concise language and image examples, which can improve the quality of open links, improve the search efficiency and accuracy of journal articles, and further improve and develop the electronic journals. Under the circumstance that China has not yet issued the standard of electronic journal identification, if electronic journal publishers or suppliers in China can refer to PIE-J to optimize the electronic journal metadata, it will greatly enhance the competitiveness of its own products and promote the development of both domestic and overseas markets.
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