This paper we introduced the integrated situation data service platform of earthquake risk assessment based on MongoDB. We take flexible document structure storage and query as the goal, use WebService technology and frontend-backend separation development mode, carry out the system design, key technology and function realization of the system. The system can upload, edit and query the integrated situation data. Through the establishment of a national unified integrated situation data service platform for earthquake risk assessment, multiple applications is realized, and service ability of national integrated situation data are improved.