Abstract: This article reports one case of iliac artery aneurysm and abdominal aortic dissecting aneurysm secondary to Brucella infection. The patient visited the hospital due to recurrent fever and lower abdominal pain. Contrast-enhanced computed tomography revealed an abdominal aortic pseudoaneurysm with bilateral iliac artery involvement. The patient subsequently underwent endovascular aneurysm repair (EVAR) and iliac artery stenting.  Following perioperative prophylactic antimicrobial therapy, the patient’s body temperature temporarily recovered to normal, yet fever and abdominal pain recurred after discharge. Further epidemiological inquiry demonstrated that the patient was a sheep farmer. The Rose Bengal plate test (RBPT) was positive, with a titer of 1∶200 by the serum agglutination test (SAT). The blood culture detected Brucella melitensis biovar 3, thereby confirming the diagnosis of brucellosis-associated infected aneurysm. After triple-antibiotic therapy with doxycycline, rifampicin, and levofloxacin, the patient improved clinically and was discharged. The patient then continued outpatient oral treatment with doxycycline and rifampicin, and the outcome was favorable during follow-up. The clinical data of this case were retrospectively analyzed, with related literatures reviewed to summarize the clinical characteristics, diagnostic approaches, and therapeutic strategies of this condition, with an attempt to enhance clinical understanding of the disease.