Abstract: 【Purpose/significance】Incorporating the double-chain blockchain technology into the research scope of public health emer?
gencies information sharing is of great value to promoting the modernization of my country's public health emergency management sys? tem and capacity【. Method/process】Through in-depth analysis of the enabling mechanism of the integration of the dual-chain block? chain into the information sharing of public health emergencies,a dual-chain blockchain-based blockchain is constructed from four as? pects:data storage layer,network consensus layer,smart contract layer and service application layer.The public health emergency infor? mation sharing model empowered by blockchain,and taking the information sharing of a medical institution under the epidemic situa? tion as an example to analyze its operation mechanism,and finally analyze the challenges and risks it faces.【Result/conclusion】This study provides a certain theoretical basis and scientific decision support for solving the problem of information sharing of public health emergencies and improving the level of emergency management of epidemic prevention and control in my country【. Innovation/limita? tions】This study combines the natural coupling between the double-chain blockchain and public health emergency information shar? ing to provide a new perspective on the dual-chain blockchain enabling public health emergency information sharing,but lacks spe? cific analysis of actual cases