摘要区块链技术具有去中心化、安全共享、不可篡改和隐私性高等优点，有助于解决目前我国医疗机构电子病历共享难题。2021年9月，某三级甲等医院联合某电信运营商建立了基于区块链的电子病历共享便民服务平台，其硬件架构由医院数据仓库、本地前置机和区块链平台组成，功能架构包括平台前置服务、区块链电子病历存档和服务平台，技术构架包含底层区块链、服务层、接口层和应用层，分别嵌入了非对称加密技术、哈希算法和智能合约等技术手段，保证了数据确权以及数据按需、可控、实时和安全共享。自2021年9月服务平台开始运行以来，截至2022年10月，某三级甲等医院累计上链患者病历21 545份，平台整体运行顺畅，实现了患者电子病历的可信存证与安全共享，为进一步推动我国医疗机构电子病历的互联互通和可信共享提供参考。

abstractsBlockchain technology has the advantages of decentralization, secure sharing and tamper resistance, and high privacy, which can solve the current problem of sharing electronic medical records in medical institutions in China. A tertiary hospital established an electronic medical record sharing services convenience service platform based on blockchain in collaboration with China mobile gansu company in September 2021. The hardware architecture of the platform consisted of a hospital data warehouse, a local front-end computer and a blockchain platform. The functional architecture included platform front-end services, the blockchain electronic medical record archiving and service platform. The technical architecture included the underlying blockchain, service layer, interface layer and application layer, which was embedded with asymmetric encryption technology, hash algorithm, smart contract and other technical means, ensuring data ownership and on-demand, controllable, real-time and secure sharing of data. Since the operation of the platform in September 2021, as of October 2022, a tertiary hospital had accumulated 21 545 patient medical records on the chain. The overall operation of the platform was smooth, achieving reliable storage and secure sharing of patient electronic medical records, providing reference for further promoting the interconnection trusted sharing of electronic medical records in medical institutions in China.