Objective To analyze the CT findings and pathological basis of the solitary fibrous tumor of pleura (SFTP), and improve the understanding of its imaging features. Methods CT findings were retrospectively reviewed in 4 patients with SFTP proved by operation and pathology.All the patients had undergone plain CT scan and contrastenhanced examinations. Results All of the tumors were found as an oval or rounded and well-defined mass in the right chest, The locations of the lesions were originating from the lateral pleura in 4 patients.The lesion's size ranged from 5.0cm×3.9cm19.0cm×15.0cm on CT. Unenhanced CT images showed the two more bigger lesions were heterogeneous, and the others were homogeneous.Contrast-enhanced CT images showed slight homogeneous or homogeneous enhancement in 4 cases, and there were enhanced and tortuous small vessels were observed in 2 lessions.Immunohistochemical staining showed that Vimentin positive was 100%, CD34(100%), Bcl-2(100%),as well as negativeS-100(100%), SMA (100%) ,and CK(100%). Conclusion CT findings of SFTP have the certain characteristic findings,especially an oval or rounded mass which originated from lateral pleura, with slight homogeneous or homogeneous enhancement on CT. SFTP should be included in the differential diagnosis.