关键词: font-size:medium, ">区块链；医疗健康；临床试验；数据安全管理；隐私保护

Abstract: Compared with traditional databases， blockchain has the characteristics of transparent rules， distributed data storage， traceability， historical data cannot be tampered， and extensive participation.At present， blockchain technology has penetrated into multiple fields such as healthcare， digital finance， supply chain management， digital asset trading， and trusted ecology， which has shown good prospects. The safety management of clinical trial data is an important proposition in the medical health field. At present， there are some pain points that need to be solved urgently in the traditional clinical trial data management，such as clinical trial registration data cannot be credibly recorded and may be lost which is not easy to share， insufficient standardization of clinical trial report review， the authenticity of real-time clinical trial data cannot be guaranteed， it is difficult to balance the efficient sharing of real-time clinical trial data and the protection of data privacy etc. Bosed on the long-term blockchain application practice， and the technical characteristics of blockchain technology， such as non-tampering， traceability， open database， and multi-centralized management， and combining artificial intelligence technology and privacy protection technology， it is proposed in this research that blockchain technology should be further applied to the medical health, expectively the safety management of clinical trial data， and blockchain can realize the credible evidence of clinical trial data and data processing behavior， and the credible evidence of data sharing and data sharing behavior under privacy protection， so that to solve related pain points in clinical trial data management and to make clinical trial data more reliable and trustworthy.

Key words: font-size:medium, ">Blockchain； Medical health； Clinical trials； Data security management； Privacy protection