The field of obesity surgery (bariatric surgery) expands as a consequence of the rapid increase of overweight and obesity not only in the western countries but also in Asia. Japan is still far behind the western progression but the problem of obesity is rising in our country so that necessity for bariatric surgery will also rise in Japan. A few statements of indication of bariatric surgery for Asian are published recently. According to the statements from IFSO-APC (International Federation of Surgery for Obesity and Metabolic Disorders, Asian Pacific Chapter) consensus 2011, bariatric surgery for Asian should be considered for the patient with BMI over 35 without co-morbidity and for the patient with BMI over 30 with co-morbidities.