BWG syndrome, a rare congenital heart disease, is a prognostically unsatisfactory disease that causes many patients to die of the myocardial ischemia within one year. Recently in pediatric BWG patients, a two coronary-system established has been the accepted treatment. We experimented positive results with a patient who was convalescing after direct closure of the left coronary arterie's orfice in the pulmonary artery and the establishment of the two-coronary-system by bilateral internal thoracic artery-left descending artery anastomosis. We report this case as a possible effective method of surgical treatment for BWG syndrome in pediatric.