Abstract: Purpose: To improve diagnostic capabilities of CT about nasal vestibule cyst. Methods: Clinical and CT images of 47 cases of nasal vestibule cyst confirmed by pathology were retrospectively analyzed. Results: 47 cases were unilateral, of which 27 cases in the right side, 20 in left side. 39 cases of lesions were round or oval, eight cases irregular shape. Clear boundary, edge finishing, uniform density were seen in most lesions with CT value range from 15 Hu to 65 Hu. There are no enhancements in major cyst, except cyst wall ring enhancement in those with infection. 33 cases have curved visible change in adjacent bone. Conclusion: There are some characteristic CT manifestations of nasal vestibule cyst, lesions were round or oval, with edge finishing and uniform density, curved change of adjacent bone is usually seen.