Cai Liang, executive deputy director of the Blockchain Research Center of Zhejiang University, said that blockchain technology has not only been applied in charitable donation tracking, epidemic tracking, medical data management, medical supplies and drug traceability, but also helps in the process of community prevention and control. Achieve accurate management and dynamic monitoring of community mobility. As a low-level infrastructure, blockchain technology can provide technical support for data sharing and trust building during epidemic prevention. Even multi-party enterprises and institutions that do not trust each other can use blockchain technology to build consensus. How to make information public better so that the public can see and believe that blockchain technology has natural advantages. Blockchain technology has three major characteristics: distributed, difficult to tamper with, and traceable.It is naturally sensitive to data. Applied in public health systems, it can help achieve cross-regional and cross-agency trust collaboration, improve collaboration efficiency, and effectively break the medical system. Island of information. As more applications continue to land, blockchain technology will play a greater role in the process of optimizing the public health system in the future.