Sun Zhengcai, male, Han Nationality, is a native of Rongcheng County, Shandong Province. He was born in 1963, entered the workforce in 1987 and joined the CPC in 1988. Sun Hold a doctor's degree in Agriculture.
From 2006-2009 Sun served as minister of the Ministry of Agriculture. He was a member of the 17th CPC Central Committee and from 2009 to 2012 he served as Secretary of the Jilin CPC Provincial Committee and from 2010 to 2012 he was Chairman of the Standing Committee of the Jilin Provincial People's Congress.
He was a member of the Politburo of the 18th CPC Central Committee and from 2012 to 2017 he was Secretary of the CPC Chongqing Municipal Committee. Sun was expelled from the Party and dismissed from public office for "serious discipline violations" in October 2017.