Internet of Things equipment security management system based on blockchain smart contract

The invention particularly relates to an Internet of Things equipment security management system based on a blockchain smart contract. The system comprises a blockchain which is used for storing the smart contract; and an Internet of Things management platform which is used for acquiring access service information carried by a corresponding Internet of Things gateway when the Internet of Things gateway submits the equipment login information of the Internet of Things equipment, determining the access service validity of the current Internet of Things gateway according to the access service information of the current Internet of Things gateway and the smart contract stored in the blockchain, and then, receiving, when the access service of the current Internet of Things gateway is valid, equipment login information of the Internet of Things equipment submitted by the current Internet of Things gateway, and determining the validity of the equipment information of the current Internet of Things equipment accordin