Background: The groin flap help cover the soft tissue defect. The groin is supplied by the superficial circumflex iliac artery and the superficial epigastric artery. Objectives: the authors described the anatomy of the superficial circumflex iliac artery, the superficial epigastric artery and venous system supplied the groin flap. Methods: This control-study included 30 dissected specimens of the mummy's groin at the anatomical deparment at Can Tho University of Medicine and Pharmacy. Results: The superficial circumflex iliac artery (SCIA) was seen all specimens. SCTA orginated in the femoral artery was 76,67 percent. Average diameter of the SCTA was 1,29 + of - 0,22 mm . The SCTA was 2 branchs: 93,33 percent. Average length of common branch of SCTA was 13,11 + of - 4,35 mm. Average diameter of superficial branch and deep branch of the SCIA were 1,06 + of - 0,20 mm and 1,15 + of - 0,24 mm, respectively. Average diameter of superficial branch and deep branch of the SCTA were 28,33 + of - 7,41 mm and 25,54 + of - 8,75 mm, respectively. The superficial epigastric artery (SEA) was 66,67 percent. Common branch of SCTA and SEA was 70 percent. Average diameter of SEA was 1,23 + of - 1,17 mm. Common branch of the superficial epigastric vein and the superficial circumflex iliac vein was 53,33 percent. Average diameter of this common vein branch was 2,40 + of - 0,35 mm. Average diameter of the superficial circumflex iliac vein and the superficial epigastric vein were 1,68 + of - 0,38 mm and 1,77 + of - 0,35 mm, respectively. Average diameter of attendant vein was 1,06 + of - 0,13 mm. Conclusions: Anatomy of the SCIA and SEA was not constant. There were many types of blood supply for the groin flap, therefore, the pedicle of the groin flap should be identified certainly in reconstructive surgery.