Transcatheter transarterial embolization is one of main scope of interventional radiology for bleeding control, preoperative and devascularization of unresectable tumor. We authors performed Gelfoam embolization in 10 cases of various patients including 3 cases of hypernephroma, 2 caes of renal arteriovenous malformation, 2 cases of unresectrable hepatoma, 2 cases of nasopharyngeal bleeding tumors and one case of bleeding urinary bladder tumor, at Department of Radiology, Korea University Hospital. Gelfoam particles were used as embolic material, which were cut into cubes approximately $1.5 imes$1.45$ imes$10㎣ in size, and total volume of used Gelfoam was 1.5cc to 12cc depending on the nature of disease and size of the feeding artery. Usual angiographic catheter of 5-7F in diameter were used. In all 10 cases, the embolization was succsful for bleeding control, preoperative preparation or devasculanization of the unresectable tumor. In four cases, postembolization syndrome was developed as complication which were 4 cases of pain on embolization site, 2 cases of fever and one case of nausea and vomiting. Transcantheter arterial embolization is very helpful for various dieases, and the Gelfoam is one of the useful and convenient absorable embolic material for transcatheter embolization.