A case of consumptive coagulopathy due to pseudoaneurysm, which occured as a complication of intramedullary nailing, was rarely reported. Pseudoaneurysm of peripheral artery is presented with pulsating mass and may show extrinsic indentations of the adjacent bone. The coagulopathy and bleeding responded to surgical elimination of the fistula and aneurysm. Diffuse intravascular coagulopathy or consumptive coagulopathy is infrequently associated with pseudoaneurysm of deep femoral artery. Laceration of major arteries are more common in open than in closed fractures. They usually occur only when a major artery is in close proximity to bone as complications to frractures. Diffuse intravascular coagulopathy or consumptive coagulopathy is characterized clinically by excessive bleeding, ecchymosis and petechiae and by laboratory evidence of a disease in the numbers of platelets and amount of fibrinogen and an increase of fibrin degradation products with prolonged prothrombin and partial thromboplastin times. When the two coexist, they create a difficult clinical problem that reuires optimal medical and surgical treatments. If the appropriate treatment was delayed, serious complication such as sepsis or death could be occured. Prompt recongnition through appropriate laboratory tests and early surgical intervention was indicated essentially. We are reporting one case of coagulopathy associated with pseudoaneurysm of deep femoral artery that presented to the broad clinical picture.