目前,国家关键信息基础设施已经被视为国家的重要战略资源,以立法形式保护关键基础设施和关键信息基础设施的安全,已经成为当今世界各国网络空间安全制度建设的核心内容和基本实践。在开展针对国家关键信息基础设施开展的研究中,首当其冲的是理清关键基础设施(CI)和关键信息基础设施(CII)的关系问题。在对CII的研究中发现,国际社会虽然对CI有着基本的共识,但对CII的认知存在较大的分歧。近十年来,随着信息通信技术的进一步发展,越来越多的基础设施接入互联网,CII涵盖的范围也随之不断扩大。本文重点解读了国内外关键信息基础设施的标准、定义和政策。 At present, the country’s key information infrastructure has been regarded as an important strategic resource for the country. To protect the security of key infrastructures and key information infrastructures in the form of legislation has become the core content and basic practice in building the cyberspace security system in various countries of the world today. In carrying out research on the country’s critical information infrastructure, the first is to clarify the relationship between the key infrastructure (CI) and the critical information infrastructure (CII). In the study of CII, it was found that although there is a basic consensus on CI in the international community, there is a big divergence in the cognition of CII. In the past decade, with the further development of information and communication technologies, more and more infrastructure has been connected to the Internet, and the scope of CII has also been expanded. This article focuses on the interpretation of the standards, definitions and policies of key information infrastructure at home and abroad.