Objective To explore the CT findings of basal cell adenoma in the parotid gland and CT quantitative diagnosis index and improve the diagnostic accuracy. Methods The Dual-phase enhanced CT findings of 22 patients with pathologically proved BCA were analyzed retrospectively，CT images were evaluated in relation to the following:location, number, size,morphology,CT density, enhancement pattern andCT quantitative diagnostic index. Results 22 cases of parotid basal cell adenoma cases were unilateral and solitary,16 cases were located in the superficial lobe of parotid gland, 2 cases involved both superficial and deep lobe, 4 cases in the deep lobe of the parotid gland tumor;The maximum section of transverse diameter of 0.5 to 5.5 cm; The lesions were mostly oval, round soft tissue mass with clear boundary, cystic masses in 17 cases ,calcificationin in 1 case. All patients in the dual-phase contrast enhanced CT were enhanced markedly, On edrly arterial phase，the CT enhanced value was (104.7±15.3)Hu, the maximum enhanced ratio was 152.3％, in later arterial phase(near arteriovenous junction phase), the CT enhanced value was (118.7±13.8)Hu.Basal cell adenoma of at least two enhanced modes: one is that the enhancement were obvious in early arterial phase, in later arterial phase enforcement continued to strengthen; secondly that the enhancement enhanced significantly in early arterial phase,the enhancement were receded in later arterial phase, at the same peroid there were some certain characteristics as the corresponding pathology were comparatively analyzed. Conclusion Basal cell adenoma of the parotid gland with CT had some characteristic, combining with the clinical history, manifestations, is helpful to the diagnosis and differential diagnosis.