On November 11th, Yin Zhentao, deputy director of the Law and Finance Research Office of the Institute of Finance of the Chinese Academy of Social Sciences, said that some blockchain technologies are being applied in the medical field. People who go to different hospitals need to take different cases. If these cases can become a database that cannot be tampered with and adjusted, it is very helpful to see patients. To achieve risk prevention and control of blockchain, the most important thing is to prevent technical risks and application risks. Blockchain is a new technology. Problems such as privacy data disclosure and attacks have occurred before, so the important point of blockchain security is technical security. In addition, applying blockchain to areas where there is real demand and real value, rather than focusing on virtual currency, is actually an opportunity and risk, which means that certain risks will be further increased.