Aim　at　the　complexity　of　seismic　hazard　evaluation,　the　hierarchical　index　system　of　regional　seismic　hazard　evaluation　is　constructed　on　the　basis　of　analysis　of　seismic　hazard　factors.　The　comprehensive　evaluation　method　of　seismic　hazard　is　proposed　based　on　the　spatial　analysis　technology　of　GIS　and　catastrophe　processing　method.　Firstly,　the　vector　data　is　obtained　using　GIS,　then　graphic　and　attribute　databases　are　built.　The　basic　indices　of　seismic　hazard　evaluation　are　assigned　value　extracting　information　from　the　databases.　Secondly,　according　to　the　characteristics　of　index　system,　normalized　formulas　for　catastrophe　model　are　selected,　and　mutation　function　values　of　regional　seismic　hazard　are　calculated　recursively　layer　by　layer.　And　then　the　regional　hazardous　level　is　determined.　Finally,　the　evaluating　results　are　introduced　into　GIS　and　the　regional　seismic　hazard　evaluation　map　is　drawn　out　using　the　spatial　analysis　technology　and　visualization　function　of　GIS.　The　regional　seismic　hazard　is　comprehensively　evaluated　Case　calculation　shows　that　the　evaluating　results　are　basically　consistence　with　the　practical　situation,　which　verifies　the　feasibility　and　rationality　of　the　model.　The　comprehensively　evaluating　results　can　provide　theoretical　basis　for　regional　seismic　prevention　plan.