Abstract: To establish an efficient traceability system for quality safety of selenium-enriched tea based on block technology, using 5G network, on the basis of comprehensively improving the information transmission rate between the server and the client, combined with blockchain technology, the data authenticity and sharing of the traceability system were fully enhanced. Results showed that the simulation software was used to verify the working status of the quality and safety traceability system of selenium-enriched tea, mainly to verify the availability and stability of information transmission during the working period of the system. This platform has higher data transmission efficiency and higher accuracy of data feedback results.

Key words: blockchain, 5G, the Internet of things, selenium-rich tea, quality and safety traceability