结合重大自然灾害应急管理的业务需求，分析了国外数据共享实践经验与案例，基于国家灾害管理实践工作经验，提出了中国建设重大自然灾害空间信息协同服务机制的构想。在进行职责任务划分的基础上，设立了包括指令中枢、数据中枢和信息中枢的立体化体制架构，并结合国家灾害管理业务工作的实际情况，制定了服务机制的业务关系流程，设定应急与常规相结合的运行模式，并对所需的保障配套机制进行了研究和分析。目前，重大自然灾害空间信息协同服务机制已经在国家灾害管理部门得到了一定范围的实践和检验，取得了较好的应用效果和社会经济效益。

By a careful analysis on the requirements of the national disaster emergency management, the international data sharing and application cases, and the national disaster management experiences, this paper proposed a new concept for constructing an Emergency Disaster Spatial Information Cooperative Service Mechanism (EDSICSM). Based on their respective functions, a tri-dimensional platform consisting of Command Center (CC), Data Center (DC) and Information Center (IC) is formed, and according to the actual work of the national disaster management, the operation relationship and operation procedures for the service mechanism are established, and two kinds of operation modes are proposed: normal mode and emergency mode. Meanwhile, some necessary auxiliary security mechanisms have also been discussed. By now, the mechanism has already been partly applied in the national disaster management department, and the social and economic benefi ts of the mechanism have also been proved.