Objective To explore imaging findings of peripheral primitive neuroectodermal tumor (pPNET), in order to improve the understanding of it. Methods Collect confirmed pPNET 10 cases by biopsy and surgical pathology from January, 2011 to December, 2015 in our hospital, and analyze its imaging findings. 4 cases of them underwent CT plain scanning and enhanced scanning, 2 cases underwent PET-CT examination, 4 cases underwent MRI plain scanning and enhanced scanning. Results 1 case occurred in nasal cavity, 2 cases occurred in bone, 8 cases occurred in soft tissue, and the mass density and signal are less homogeneous, cystic necrotic area inside can be seen, but with no calcification. CT shew that soft tissue density was not homogeneous, MRI signal was mixed, T2WI, DWI, T2 fat suppression was centered to high signal, T1WI was centered to high signal, no swollen lymph nodes were found all around the lesions. Those of which occurred in nasal cavity and abdominal pelvic manifested themselves as leaf - like soft tissue masses, they developed with invasive growth, and oppressed violated adjacent tissues. Those of which occurred in the chest wall and bones destroyed adjacent bone, sclerotic margins, periosteal reaction and the formation of tumor bone were not found in damaged area, 2 patients undergone PET-CT examination were found having abnormal radioactive concentrations, SUVMAX was respectively 5.4, 11.7. After enhanced scanning, except that 1 case occurred in chest wall had mild enhancement, the rest of the lesions shew obviously heterogeneous enhancement, immature blood vessels were seen in some lesions. Conclusion Imaging findings of pPNET lacks specificity, but it can better show the internal structure of the tumor, make clear of the scope of tumor and find if it metastases to distant parts.