Objective:To investigate the technique and clinical value of angiography and interventional treatment in gastrointestinal hemorrhage of unknown origin.Methods:Twenty-three patients (male 16 cases,female 7 cases) were performed angiography,7 of them were performed interventional treatment which included infusion of vasopressin in 4 patients,embolization with galetin sponge in 2 patient and stainless coil in 1 patient.Results:Sixteen patients were positive in angiogram,among them 14 cases were located in smal...