Bachelor of Laws, Korea University, 1983. Master of Laws in Commercial Law, Korea University, 1990. Doctor of Laws in Civil Procedure, Korea University, 1999.
Visiting professor civil procedure law Sookmyung Women's University College Law, Republic of Korea, 1997—1998. Pro bono legal advisor Taewha Christian Social Welfare Center Shelter for Beaten Women, Republic of Korea, 1999—2000. Legal director, standing member executive committee Korean Federation Environmental Movement, 2000—2004.
Member of Parliament National Assembly, Republic of Korea, 2000—2004, member environment and labor, budget and accounts, national policy committees, 2000—2002, executive secretary special committee on political reform, 2004. Member standing committee, member Supreme Council Grand National Party, Republic of Korea, 2003—2004. Mayor City of Seoul, since 2004.
Married; 2 children.