Abstract: Since the 1980s,decision support system has been greatly advanced,along with technological development of computer science,communications,mobile internet,geographic information systems,remote sensing,virtual reality,databases management system,positioning and cruising,mobile internet of things,big data analysis and cloud computing,video surveillance system,etc. The application of information technology and high technology,flood management information systems,and flood control decision support systems have made great progress in China. This paper reviews the state of art of flood control decision support systems research and application in the aspects of basic information classification and application,flood management system and platform,flood analysis model,and flood disaster risk assessment. In terms of flood analysis model,it focuses on application of weather forecast,flood forecast,and disaster evaluations.