Objective Toevaluatetheclinicaleffectofinterventionaltreatmentfordelayedhemorrhageinpatientsafterabdominal surgery.Methods Dataof76patients,undergoingangiographyduetodelayedpostoperativehemorrhage,wereanalyzedretrospectively. Theexclusioncriteriaincludedpositiveangiographywithoutembolizationorhaemorrhagecausedbyothercauses(urologicaland reproductivesystemdiseases).Basedonendovascularprocedures,thepatientsweredividedintoembolizedgroup (positiveangiography withembolization)andnon-embolizedgroup(negativeangiographywithoutembolization).Theoutcomesoftreatmentwerecompared betweentwogroupsandfactorsassociatedwithrebleedingwerealsoanalyzed.Results Angiogramswerepositivein70% (53/76)of patients,andintravascularembolizationswereperformed.Intheembolizationgroup,technicalsuccessrateandclinicalsuccessrate were98.1%(52/53)and71.7%(38/53),respectively.Noseverecomplications,suchasgastrointestinalorhepaticischemicnecrosis wereobservedinallpatients.Therebleedingrateswere28.3%and52.2%intheembolizationgroupandthenon-embolizationgroup, respectively(P＝0.046).Multivariateanalysisshowedthatuseofvasopressoragentsbeforesurgerywasanindependentriskfactor forrebleeding (P＝0.022).Conclusion Intravascularinterventionaltherapyisasafeandeffectivemethodfordelayedhemorrhageafter abdominalsurgery.Useofvasopressoragentsbeforesurgerymayincreasetheriskofpostoperativerebleeding.