Endovenous fistula, also called arteriovenous endovascular fistula, is one of the surgical procedures that is mainly used in the treatment of hemodialysis. An arteriovenous endovascular fistula is a minor vascular anastomosis procedure in which an artery in the forearm near the wrist is sutured to an adjacent vein so that arterial blood flows in the anastomosed vein, forming an arteriovenous endovascular fistula. The vessels of the arteriovenous endovascular fistula provide sufficient blood for hemodialysis treatment and provide adequacy for dialysis treatment. In general, the principles of site selection are upper extremity before lower extremity, non-dominant side before the dominant side, and distal end before proximal end. In general, the most commonly selected vessels are the radial artery of the forearm wrist and the internal fistula of the cephalic vein.