About 50 years have passed since the first report of Kawasaki disease (KD), and adult patients with coronary artery lesions caused by KD have increased. The national results of coronary artery bypass grafting (CABG) in adult KD patients who had undergone CABG between 2008 and 2019 in the National Clinical Database of Japan were investigated. A total of 343 patients were identified. Furthermore, the outcomes of the 167 patients (49%) after discharge were surveyed by questionnaires. There were 264 male (77%) and 79 female (23%) patients. The median age at operation was 39 (5 th -95 th percentile, 13-72 years). The numbers of emergent operations was 37 (10%). Previous CABG and previous percutaneous coronary intervention were performed in 16 (5%) and 50 (15%) patients, respectively. Acute myocardial infarction was found in 64 patients (19%), and cardiogenic shock was found in 10 patients (3%). The mean numbers of grafts and anastomosed vessels were 2 each. The grafts used were as follows. internal thoracic artery 316; saphenous vein grafts 118; gastroepiploic artery 52, and radial artery 56. The anastomosed vessels were as follows. left anterior descending artery 305, right coronary artery 209, left circumflex 145, and diagonal branch 73. Mitral valve surgery and aortic valve surgery were performed in 10 and 9 patients, respectively. The coronary risk factors were as follows: Previous smoking 124 (36%), dyslipidemia 126 (37%); hypertension 124 (36%); and diabetes mellitus 35 (10%). Antiplatelet agents after CABG were administered after CABG to all patients, and coumadin was given to 133 patients (39%). Statins and beta-blockers were given to 143 (42%) and 198 patients (58%), respectively. Three patients (0.8%) died in hospital, and 7 patients died in the late period. Survival rates after CABG at 1, 5 and 10 years were 98%, 94% and 93%, respectively (n= 343). Survival rates at 5 years depending on the values of the preoperative left ventricular ejection (LVEF) were as follows. bad (<30%, n=24), 72%, medium (≧30% but < 60%, n=140), 93% good (≧60%, n=189), 97%. There were significant differences among the 3 groups (p<0.01). The preoperative LVEF affected on the outcome after CABG.