Objective To analyze the imaging detection of 15 cases of patients with dermatofibrosarcoma protuberans (DFSP). Methods The imaging data of 15 cases of DFSP patients in our hospital were analyzed retrospectively. 8 cases were examined by CT and 7 cases were examined by MRI, and the imaging features were summarized. Results The tumors of 15 DFSP patients were located in the skin and subcutaneous fat layer and they were single lesions, including 1case in the posterior occipital part, 5 cases in chest, 5 cases in lower back, 2 cases in buttocks and 2 cases in planta. The longest diameter of tumor was 1.5-8.4cm with an average of (5.22±1.47) cm. Under the microscope, the size and shape of tumor cells were relatively uniform ( spindle-shaped tumor cells could be seen in a radial shape or streak arrangement), and a large number of collagen fibers and a small number of inflammatory cell infiltration were seen in the stroma, and immunohistochemistry showed vimentin and CD34 in 15 cases both were (+). Among 8 DFSP patients with CT, 6 cases showed moderate uniform density with 4 cases of a slightly lower density. Among DFSP patients with MRI, 3 cases showed equal signal on T1WI and uneven high signal on T2WI, and 4 cases showed slightly low signal on T1WI and high signal on T2WI and DWI with clear boundary, and enhancement scan showed uniform or non-uniformly marked enhancement. Conclusion Both CT and MRI have obvious features in DFSP patients, and they benefit qualitative diagnosis and preoperative evaluation, and have certain clinical application value.