Objective To analyze the multi-detector computed tomography (MDCT) features of ectopic pancreas in the gastrointestinal tract in order to improve the diagnostic accuracy of the disease. Methods CT findings were reviewed retrospectively in 25 cases with ectopic pancreas confirmed by surgery and pathology.All patients underwent plain CT, contrast-enhanced scanning with three phases and three dimensional reconstruction. Analyze the location, size, the long diameter (LD)/the short diameter(SD), shape, attenuation, contrast-enhancement pattern and grade of the lesions, growth pattern, border, as well as enhancement of the overlying mucosa. Results All 25 cases were of single lesion.9cases were in the gastric.9 cases were in the duodenum, 5 cases were in the jejunum, 2 cases were in the ileum. The max axes ranged from 6-25mm, 7 cases the LD/SD ratio is greater than 1.4 in gastric ectopic pancreas, 5 cases the LD/SD ratio is greater than 1.4 in duodenum. the LD/SD ratio of the jejunum and ileum lesion is 1.0. 15 cases were ovoid in shape, 4 cases were sphere, 4 cases were irregular shape, 2 cases were manifested as Localized thickening of the gastrointestinalwall. 11cases were located in the submucosa and muscularis.The ectopic pancreas was continuously enhanced in all cases，The contrast enhancement grade was similar to that of the normal pancreatic tissue in 13 cases. 2 case showed central duct sign. 20 cases were endoluminal growth pattern. Conclusion Gastrointestinal tract ectopic pancreas has certian MDCT charateristics. It can help us to improve the diagnostic ability of the disease to familiar with these features.