Abstract: objective: To investigate the CT appearance and diagnostic value of pancreatic endocrine tumor (NETP).Methods: The CT manifestations of 19 patients with NETP confirmed by surgery and pathology were analyzed retrospectively, Fisher's exact test was used to compare the relationship between different grades, functional and non-functional tumors and lesion size. Results: 19 patients had a total of 23 lesions, including 4 functional NETPs and 15 non-functional NETPs. According to the WHO classification, there were 7 cases of G1, 10 of G2, and 2 of G3. CT scans consisted of 6 completely solid lesions, 17 solid cystic lesions, 0 complete cystic lesions, 4 calcifications, and 10 main pancreatic duct dilatation. Low-grade tumors were less than 3 cm 72.7% (8/11), high-grade tumors were greater than 3 cm 83.3% (10/12), and the two were significantly different (P<0.05), while functional tumors were less than 3 cm 66.% (4/6), non-functional tumors were greater than 3 cm 82.4% (14/17), and both were statistically significant (P<0.05). Conclusion: The CT findings of pancreatic endocrine tumors have certain characteristics. The maximum diameter of the tumor is helpful for the judgment of different grades and functional and non-functional tumors, and can guide the clinical development of treatment plans.