A 58-year-old man presented with paralysis and pain in the left leg, and a mass was found in his thigh. Because of the growth of the mass and the worsening of his symptoms, the patient visited our hospital. Multidetector computed tomography revealed a large deep femoral arterial (DFA) aneurysm. Surgical intervention was planned because of the large size of the aneurysm, the high risk of perforation and the worsening symptoms. Aneurysmectomy and revascularization of the distal DFA with an artificial blood vessel graft were performed. DFA aneurysms are extremely rare. These aneurysms have a high rate of rupture, and surgery plays an important role in their treatment. However, standard methods have not yet been established because of their rarity of DFA aneurysm. We describe a case of DFA aneurysm in a patient who was successfully treated with aneurysmectomy and revascularization with an artificial blood vessel graft.