Objective To investigate the CT imaging features of ovarian clear cell carcinoma. Methods 12 cases of ovarian clear cell carcinoma with complete clinical dates and CT images which confirmed by pathology were retrospectively analyzed, and the characteristics of CT were summarized. Results The average age of 12 cases was about 48 years old. 8 cases (75%) presented with stage-I disease. Tumors were unilateral in all the cases. The average maximum diameter of tumors was 11.6cm. All 12 cases showed cystic masses with solid protrusions. The cysts were unilocular in 10 lesions and multilocular in 2. 9 cases had smooth margin. Average CT value of the cystic portion was 18HU. The solid protrusions showed an eccentric pattern in 11 cases. The number of protrusions in 6 cases was≤3. The solid protrusions had obviously heterogeneous enhancements after contrast.2 cases were associated with endometriosis, and 5 cases were associated with ascites. Conclusion The CT features of ovarian clear cell carcinoma have certain characteristics and thus CT provides as a valuable diagnostic measure.