Emergency　decision　making　(EDM)　is　an　effective　way　to　deal　with　emergency　situations　because　of　its　prominent　role　in　alleviating　the　losses　of　properties　and　lives　caused　by　emergency　events.　It　has　drawn　increasing　attention　from　both　governments　and　academia,　and　become　an　important　research　topic　in　recent　years.　Studies　show　that　decision　makers　are　usually　guided　by　bounded　rationality　under　risk　and　uncertainty　conditions.　Their　psychological　behavior　plays　an　important　role　in　the　decision　making　process,　and　EDM　problems　are　usually　characterized　by　high　risk　and　uncertainty.　Thus,　decision　makers＇　psychological　behavior　has　been　considered　in　existing　EDM　approaches　based　on　prospect　theory.　An　emergency　event　might　evolve　into　different　situations　due　to　its　dynamic　evolution,　which　is　one　of　the　distinctive　features　of　emergency　events.　This　important　issue　has　been　discussed　in　existing　EDM　approaches,　in　which　different　emergency　situations　are　dealt　with　by　devising　different　solutions.　However,　existing　EDM　approaches　do　not　consider　decision　makers＇　psychological　behavior　together　with　the　different　emergency　situations　and　the　different　solutions.　Motivated　by　such　limitation,　this　study　proposed　a　novel　approach　based　on　prospect　theory　considering　emergency　situations,　which　considers　not　only　decision　makers＇　psychological　behavior,　but　also　different　emergency　situations　in　the　EDM　process.　Two　examples　and　related　comparison　are　provided　to　illustrate　the　feasibility　and　validity　of　this　approach.