Cross-domain flow differentiation and epidemic prevention system and method based on Internet of Things and block chain

The invention provides a cross-domain flow differentiation and epidemic prevention system and method based on the Internet of Things and a block chain. The system comprises an Internet of Things system, a data processing platform, a monitoring platform and a block chain system. The Internet of Things system is configured to obtain epidemic situation related data and transmit the epidemic situationrelated data to the data processing platform; the data processing platform is configured to process the data in the Internet of Things system and then enter the blockchain system through an uplink channel; the blockchain system is internally configured with a unit information chain in a corresponding region, the blockchain system is stored in a consensus network layer, the consensus network layeris provided with a plurality of hierarchical number of consensus channels, the consensus channels correspond to the matched identity personnel, and the blockchain system is externally connected witha monitoring platform; the