The double-contrast upper gastrointestinal examination is an effective means of clearly demonstrating complete gastric erosions. The main radiographic feature of the complete gastric erosion is a small barium fleck surrounded by a radiolucent halo in the gastric mucosa. From Jan. 1984 to Dec. 1986 a total of 48 cases of complete gastric ersions was diagnosed by double-contrast UGI examinations, and then 12 cases among them underwent endoscopy within 6 days of UGI examination. Form evaluation of the relationships of the diameters of radiolucent holos to the central barium flecks, the radiographic findings were reviewed. 1. 1) The male to female ration was 20:28/ 2) The clinical wymptoms included epigastralgia, indigestion, hunger pain, and vomiting. 2. Thirteen coexistent diseases were found in 11 patients : gastric ulcer in 4 patients, doudenal ulcer in 3, gastric cancer in 3, liver cirrhosis in 2, and hepatoma in one. 3. The gastric antrum was involved in all cases. The gastr c body was also involved in 8 case, and duodenal bulb in 2 cases. 4. In all cases there were multiple complete erosions. The number of the erosions were 2 to 10 in 83.4% of cases.