On the basis of the MAPGIS platform, a multi-source information forecast system for coal mine water disaster has been developed and written with VC++ language. Multi-source data, including seismic, electrical and hydrological data, are processed. Special maps, registration and spatial quantitative analyses are made in the MAPGIS system. A forecast model is constructed. Using the system, the authors processed the actual data in some coal mines and, as a result, obtained more accurate forecasting results.