Abstract:Internet of Things(IOT) is the outcome of the development of information technology to a certain stage,and is a new scientific,technological,and economical wave of global information technology industry,and it will have big impact on many important scientific and technological innovations as well as industry development,and has attracted high attention from governments,enterprises,and research organizations in various countries.However,the information security of the IOT is one of the core technologies that will influence the security and sustainable development of the IOT.High attention should be paid to that.Therefore,a well-defined security architecture and security system for the IOT will have great impact on the save application and sustainable development of the IOT.This paper tends to analyze the security requirements in different layers of the IOT,and hence establish a security architecture system for the IOT,expecting to offer a theoretical reference for the establishment of reliable security systems of information for the IOT in the future.