He was also active in foreign activities. He has served as the president of the Korean Prostate Society since 2009 after holding key positions such as the publication chairman of the Korean Prostate Society, director of general affairs, and director of finance. In addition to this, he has been active in various fields, such as director of the Asia Pacific Prostate Society and president of urinary topical treatment research. In this way, the Department of Urology at Samsung Seoul Hospital achieved 100 robotic surgeries for prostate cancer.