On behalf of the Korean Society of Obstetrics and Gynecology, I am pleased that lots of celebrated professors and promising young doctors would share the time at the 18th Seoul International Symposium in Seoul, Korea on Sept. 28, 2013. We are going to discuss various parts of obstetrics and gynecology which are gynecologic oncology, reproductive endocrinology, maternal-fetal medicine and general gynecology. Therefore this congress will be a great opportunity to confer about currently concerned matters in obstetrics and gynecology and find solution. The scientific program is consisted of diverse presentations by the distinguished speakers with up-to-date topics on both basic and clinical fields to enhance our medical status. Also, in this year, both Prof. Ikuo Konishi from JAPAN and Prof. Horng-Der Tsai from Taiwan who are plenary speakers will be new Honorary members of KSOG. Lots of outstanding young doctors from Korea, Japan and Taiwan are going to give oral presentations at International Young Doctors' Exchange Program. Through it, we would expect bright future by wise posterity. I hope that all of participants would enjoy sharing scientific information and have a wonderful memory in Korea.