 In 2002, he was arrested and punished in the process of uncovering the "Park View Preferential Sale" case of former Seongnam Mayor Kim Byung-ryang in the 60th minute.He served as co-chairman of the Seongnam City Hospital Establishment Promotion Committee in 2004.He joined the Uri Party on August 23, 2005 and announced his intention to run for Seongnam mayor.