A 35-year-old male was admitted to the emergency room with a diagnosis of “drug-induced pseudoaneurysm of the femoral artery” due to “rupture of a pulsatile mass in the right groin that had been bleeding for 6 hours”. The patient had a history of drug abuse for 8 years and injecting drugs for 2 years, and was currently injecting heroin with no history of methamphetamine use. After a rapid preoperative test for hepatitis B, hepatitis C, syphilis and HIV (hepatitis C positive), the right femoral artery was explored under general anesthesia in an emergency. A 4-cm longitudinal incision was made on the inguinal ligament to expose the common femoral artery, and sling traction was applied; a longitudinal incision was made on the right thigh to expose the superficial femoral artery, and sling traction was applied; the right saphenous vein was 4-cm in diameter, and the right saphenous vein, which was soft and nonthrombotic with no hard nodules, was freed and then sling traction was applied. After applying 30mg of normal heparin to the whole body, the distal end of the common femoral artery and the proximal end of the superficial femoral artery were sutured, the upper and lower incisions were filled with gauze, and an aneurysm incision was made. The left index finger was pressed on the hemorrhagic point of the deep femoral artery, and the cavity of the aneurysm was cleared, the necrotic tissues were cut, the cavity of the aneurysm was rinsed out repeatedly by diluted peroxide and chlorhexidine, and the opening of the deep femoral artery was closed by a fatboy needle with a No. 7 silk suture, and the cavity of the aneurysm was closed after the opening was closed without bleeding. Povidone-iodine was used again to disinfect the periphery of the incision of the superficial femoral artery of the common femoral artery, clean instruments were replaced, the operator changed gloves, and the saphenous vein was freed for about 12 cm, cut off, and the upper and lower severed ends were sutured to stop bleeding. The saphenous vein was flushed with heparinized saline, checked for missed branches, and placed in heparinized saline for backup. A deep anterior fascial tunnel was made between the upper and lower incisions, and the tumor cavity was circumvented externally with appropriate dilatation, and the saphenous vein was placed in the tunnel in an inverted direction to ensure that the saphenous vein was not twisted, angular, or compressed. The common femoral artery was longitudinally dissected 1.2 cm proximally to the ligation point, and the distal end of the saphenous vein was flushed with heparin water to modify the cobra’s head, and then the 5-0 Prolane line was used to perform a continuous end-to-side anastomosis with the common femoral artery in a parachute fashion, and the anastomosis was relaxed and blocked without any leakage of blood from the anastomosis; in the same way, the proximal end of the great saphenous vein was anastomosed with the distal end of the superficial femoral artery suture point, and the 5-0 Prolane line was tightened after the venting of the gas. The 5-0 Prolane suture was tightened after exsufflation. After proper hemostasis, the incision was flushed with saline and closed.