Disaster　systems　are　characterized　by　complexity　and　chaos,　often　leading　to　cascading　effects　that　amplify　risks　and　losses　across　urban　areas.　To　mitigate　these　impacts,　it　is　crucial　to　investigate　the　interactions　among　functional　organizations　within　emergency　collaborative　governance　networks,　thereby　enhancing　a　city’s　emergency　management　capability.　This　study　analyzes　the　relational　patterns　among　disaster　response　organizations　in　Fujian　Province,　China,　utilizing　historical　data　from　14　typhoon　events　between　1990　and　2023.　Through　three　key　indicators—organizational　node　centrality,　clustering　coefficients,　and　core-edge　structures—the　research　examines　the　functional　and　structural　characteristics　of　these　organizations.　Building　on　this　analysis,　the　paper　constructs　a　disaster　chain　network　and　proposes　a　collaborative　urban　emergency　response　model.　By　integrating　disaster　chain　dynamics　with　organizational　node　relationships,　the　study　aims　to　broaden　the　analytical　framework　for　typhoon　disaster　management.　The　findings　reveal　that　the　Office　of　the　People’s　Government　of　Fujian　Province　serves　as　the　central　coordinator　during　typhoon　responses,　while　the　Emergency　Management　Department　acts　as　the　primary　hub　for　integrating　resources　across　critical　departments,　including　transportation,　meteorology,　and　civil　affairs.　Based　on　these　results,　the　paper　proposes　three　synergistic　mechanisms:　early　warning　dissemination,　coordinated　rescue　operations,　and　post-disaster　reconstruction,　to　optimize　typhoon　disaster　response　strategies.　©　The　Author(s),　under　exclusive　licence　to　Springer　Nature　B.V.　2025.