Abstract: Aneurysm is a localized pathological dilation of a blood vessels. False aneurysm is discontinuity in the vascular wall leading to an extravascular hematoma that freely communicates with the intravascular space producing pulsatile hematoma. In false aneurysm wall is ruptured and there is collection of blood(hematoma) that is bounded externally by adherent extravascular tissue. However any vessel may be affected by a wide variety of disorders that weaken the wall , including trauma( traumatic aneurysm), infection ,congenital defects such as potentiating berry aneurysm. Sporadic cases of false aneurysm following fractures of the facial bone have been reported but are few. aneurysm and pseudoaneurysm are complication of maxillo-facial trauma but sometimes occurs a result of isolated mandibular condylar fracture.