Abstract: An early warning information system is designed and developed for coal mine water hazards based on the development style of COM GIS and the development environment of ArcGIS Engine and Visual Studio 2010 that uses the means of integrated secondary development and connects closely with the computer programming technology of Visual C#.net. This system achieves the information management and real-time monitoring of water inrush prediction based on transient electromagnetic method principle and mathematical model of water inrush prediction, establishes the interface of user interaction and analyzes a vast amount of water inrush data through the powerful function of spatial analysis of GIS. It will provide an improment foundation for water inrush prediction.