Based on analysis of the present situation of mine water prevention and control,the author proposed the research goals of information system for mine water pre vention and control. This paper introduces the architecture and basic ideas of the information system,briefly sums up the architecture designs,development pla tforms and implementations of the prediction system and the computer aided decis ion making system for mine water prevention and control. The constructed informa tion system has been applied to No.5 Mine of Pingdingshan Coal Mining Group,and resulted in good effect of application.