From 10/1990 to 6/2000

An official of the Construction-Industry Department of Mai Son District

From 6/2000 to 6/2003

Director of the Investment and Construction Project Management Board of Mai Son District

From 7/2003 to 12/2003

Head of the General Technical Management Division of Mai Son District

From 01/2004 to 5/2004

Member of the Executive Committee of the Party Committee of Mai Son District, Term XVI; Vice Chairman of the People's Committee of Mai Son District, Term XVII

From 5/2004 to 12/2004

Member of the Executive Committee of the Party Committee of Mai Son District, Term XVII; Vice Chairman of the People's Committee of Mai Son District, Term XVIII

From 12/2004 to 6/2008

Member of the Standing Committee of the Party Committee of Mai Son District, Term XVII; Permanent Vice Chairman of the People's Committee of Mai Son District, term XVIII

From 6/2008 to 12/2009

Permanent Deputy Secretary of the Party Committee of Mai Son District, Term XVII, Chairman of the People's Council of Mai Son District, Term XVIII

From 01/2010 to 4/2010

Acting Secretary of the Party Committee of Mai Son District, Term XVII, Chairman of the People's Council of Mai Son District, term XVIII

From 4/2010 to 9/2013

Member of Provincial Party Committee, Secretary of Mai Son District Party Committee, term XVII and Term XVIII, Chairman of Mai Son District People's Council, Term XIX

From 9/2013 to 9/2014

Provincial Party Committee Member, Secretary of the Party Committee of Van Ho District

From 9/2014 to 6/2015

Provincial Party Committee Member, Director of the Department of Construction of Son La

From 6/2015 to 3/2019

Provincial Party Committee Member, Director of the Department of Planning and Investment of Son La Province.

From 3/2019 to present

Provincial Party Committee member, Vice Chairman of Son La Provincial People's Committee.