Numerous advances have been applied for the management of hemophiliac patients and the life expectancy of them was markedly improved. But they have many problems yet such as transmission of infections, adverse reactions to plasma products, development of factor VIII inhibitor and inadequate coagulation in the medical and/or surgical treatment. Anesthetic care should be managed with gentle, atraumatic intubation and careful positioning of patient pointing to the prevention of bleeding from hemorrhagic diathesis. We present a case of hemophilia A who had in operation for olecranon fracture of left ulna. It is important that anesthesiologist should realize that certain pathophysiological changes, especially coagulation disorders, might be occurred during surgical procedures and that perioperative preparation and management for them should be kept well.