Abstract:This paper introduces the construction background and construction content of flflood control and drought resistance geographic information cloud service platform in Anhui. The key technologies are studied such as construction of water conservancy data framework for flflood control and drought resistance in Anhui, development of geographic information application service, and the geographic information service platform based on Portal for ArcGIS. The flood prevention GIS systemis developed based on the Anhui flood control and drought resistance geographic information service. The platform provides services for a number of flood control and drought related business systems, and provides comprehensive and effificient technical support for business management such as flflood control, drought resistance and mountain flflood disasters.