Objective: To observe the clinical and ultrasound characteristics of adrenal lymphoma (AL). Methods: The clinical and ultrasound characteristics of 15 patients with AL confirmed by pathology were analyzed retrospectively. Results: Among 15 AL patients, 6 patients manifested as bilateral masses and 9 patients were unilateral involved, a total of 21 masses. 86.6% (13/15 cases) of patients was diffuse large B-cell lymphoma. The average maximum diameter of the lesions ranged from 4.4 to16.8cm (9.0 ± 3.2 cm). 95% (20/21 cases) of the lesions appeared as solid hypoechoic masses. 80.9% (17/21 cases) of the lesions exhibited heterogeneous, with internal streaky or reticular hyperechoic separations. 61.9% (13/21 cases) of lesions had unclear boundaries, 71.4% (15/21 cases) of lesions had irregular morphology, and 52.4% (11/21 cases) of lesions involved the surrounding organs. There was no blood flow signal in the lesion (9/21, 42.8%) or little blood flow signal (12/21, 57.1%). 8 patients underwent contrast-enhanced