Objective: To investigate CT and MR findings of extrapleural solitary fibrous tumor(ESFT) for imaging diagnosis. Methods: The CT and MR findings of 7 cases with ESFT proved by pathology were retrospectively analyzed. Results: In 7 cases, 3 cases were located in the abdomen(intraabdominal, retroperitoneal and peritoneal respectively), and 1 in nasal cavity and sinuses, 1 in parotid gland, 1 in inguinal region and 1 in bladder respectively. All masses were solitary, four were round or oval, while 3 were irregular. Margins of 5 cases were well defined, while 2 were partly unclear. Diameters of the tumors ranged from 2.0~9.1 cm, and the average tumor size was 6.5 cm. The CT density was homogeneous in 2 cases and heterogeneous in 4 cases. Contrast enhanced CT showed early mild enhancement in 1 case, and obvious enhancement in the arterial and delay phases in 3 cases. On MR, one was hypointense on T1WI and slightly hypointense on T2WI. One was isointense on T1WI and slightly hyperintense on T2WI with strip hypointensity. Conclusion: ESFT can be found in any part of the body. CT and MR findings of ESFT were sometimes characteristic and multiphase contrast enhanced scan can improve the diagnostic accuracy.