Percutaneous abscess drainage was performed on 17 patients, who had postoperative complicated itrapericated intraperitoneal abscess under the guidance of ultrasound or CT over one year period. Sucessful drainage was obtained in 15 pts out of 17(88%). The average duration of the catheter drainage was 21 days. Successful drainage was obtained in one case which had a fistulous tract to the pancreatic duct. The drainage durations in this case was 65 days. Duration of catheter drainage did not correlate with initial amounts of pus. Our study suggests that percutaneous abscess drainage is an effective treatment in patients who have postoperative complicated intraperitoneal abscess.