随着物联网的快速发展,其安全问题渐渐被重视起来。本文根据物联网的基本概念、特点,分析了物联网的三层体系结构分布情况及各层面临的安全威胁,提出了物联网各层的安全架构,对今后物联网的研究和发展有重要的借鉴和参考价值。 With the rapid development of the Internet of Things, its security issues are gradually being taken seriously. Based on the basic concepts and characteristics of IoT, this paper analyzes the distribution of IoT’s three-tier architecture and the security threats at all levels, and puts forward the security architecture of IoT at all levels. It is important for the research and development of IoT in the future Reference and reference value.