Coronary artery dissection after blunt chest trauma is very rare conditon, and this can result in a serious acute myocardial infarction. We report a case of a 54-year old male who was presented with an anterior myocardial infarction after traffic accident, with steering wheel injury. His coronary angiography revealed a discrete eccentric 85% stenosis of proximal left anterior descending coronary artery with dissection and intravascular ultrasound showed a dissecting flap from the distal left main coronary artery to proximal left anterior descending coronary artery. He was successfully treated by percutaneous transluminal coronary angioplasty with stent.