Abstract: Objective: To study the CT features of cystic renal cell carcinoma in order to improve accuracy of the preoperatiue diagnosis.Methods: The CT imaging data of 11 cases of cystic renal cell carcinoma confirmed by pathology were retrospectively analyzed.Results: Seven cases demonstrated multilocular cystic mass with irregular inner wall and septas,and the inner wall and septa were obviously enhanced.Four cases revealed unilocular cystic renal cell carcinoma with enhanced mural nodules and non-enhanced muddy cystic content.Conclusions: The cystic renal cell carcinoma has certain CT characteristics,which is of value for surgical operation.