Anomalous origin of the left coronary artery (ALCA) arising from the pulmonary artery is a rare anomary, and causes myocardial infarction and death in children. Direct implantation of ALCA to the aorta was performed in the 6-year-old female patient. A large button of pulmonary arterial wall resected with ALCA could spare the shortage of the distance between the aorta and the ALCA. Postoperative catheterization displayed non-stenotic left coronary artery. Left ventricular function assessed by echocardiography showed improvement. Cold area in early stage postoperative myocardial imaging disappeared one year after the surgery, which suggested the hibernation of the preoperative myocardium.