The amebiasis is a common disease in Korea as well as worldwide especially frequent intropical area such as India, Africa and South America. The diagnosis of amebiasis remain difficult and complex, despite of many diagnostic methods, for example, direct stool test for ameba, many immunologic studies and biopsy. Authors analized radioligically the patients who have had confirmed as a amebiastis from June, 1976 to Septemper, 1979 at Yonsei University, College of Medicine, Severance hospital. The results as follows : 1. The amebid liver abscess was a most common from of the amebiasis in Korea, which were 40 cases among 56 cases. Plain abomen showed huge hepatomegally, compression and displacement in hepatic flexure of colon, and reflex gas distension in almost cases. Chest P-A showed nonspecific right lower lung findings from secondary to right upper abdominal pathology, such as elevated right diaphragm (61.3%), pleural effusion (60.0%), right lower lung consolidation (37.5%) an abscess cavities(5.0%). Liver scan showed large space occupying lesions, most commonly situated in right lobe of liver (68.6%). 2. Among total 15 cases of the amebic colitis, positive findings on barium enema were 80%. Barium enama showed spasm and irritability (89.2%), narrowing of lumen and lack of distensibility (71.4%), and deformity of cecum(20.0%). Involved site was cecum, ascending colon, rectosigmoid, transeverse and descendning colon in order of frequency. Unusual involvement of terminal ileum was 2 cases. 3. Combined cases of amebic liver abscess and colitis were 4 cases(27.7%).