He previously served as Minister of Construction and Building Industry and the Political Bureau of the Central Committee of the Workers' Party of Korea.
In August 2003, he was head of the department of Science and Technology of the Ministry of Construction.
In September 2010, he was elected a candidate member of the Central Committee of the Workers' Party of Korea.
In April 2009, he was elected as delegate to the 12th convocation of the Supreme People's Assembly.
[2] When Kim Jong Il died in 2011, he was a member of his funeral committee.