Abstract:The settlement scheme of information management and assistant decision-making system in computer for earthquake precaution and decreasing disaster is introduced from its construction goal, system function, devising principles, software structure design, etc.. By using the technology of GIS, the system fulfilles the function of administrating basic information in GIS. Through further exploitation on the GIS platform, programming with other types of program language, and integrating its analytical functions in space and net with mathematics models in other subjects, the quick earthquake disaster prospect and assistant decision-making functions of the system are realized.