Case-based　reasoning　(CBR)　is　one　of　the　best　methods　for　generating　an　effective　solution　in　an　emergency.　In　recent　years,　some　methods　for　generating　emergency　alternatives　have　been　included　in　practical　CBR　applications,　but　there　have　been　no　in-depth　studies　of　these　processes.　In　this　study,　we　propose　a　new　method　for　dynamic　case　retrieval　with　subjective　preferences　and　objective　information,　which　considers　the　personal　preferences　of　the　decision　makers　and　changes　in　the　attributes　of　the　emergency　as　the　situation　develops.　First,　we　present　a　formula　for　calculating　the　case　similarity　and　changing　trends　in　the　case　considered,　where　similar　cases　are　obtained.　Next,　we　describe　a　method　for　measuring　the　overall　assessment　value　with　respect　to　similar　historical　cases,　which　is　obtained　by　aggregating　the　case　similarity,　the　utility　case　similarity,　the　first　response　time,　and　the　implementation　effect.　The　subjective　preferences　and　objective　information　are　also　integrated　in　the　decision-making　process.　Finally,　we　present　a　case　study　based　on　the　emergency　response　to　a　fire　in　a　high-rise　building,　which　illustrates　the　applicability　and　feasibility　of　the　proposed　method.