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 benefits of the mechanism have also been proved.