He successively served as police officer, deputy director and instructor of Hongyi Police Station, Zhaochen Police Station, Ruichang City Public Security Bureau, Jiangxi Province. Won the first-class individual merit and the third-class individual merit once, the National Excellent People's Police, the 13th China Youth May 4th Medal, the National May 1st Labor Medal, the National Public Security Bureau Love the People Model, and the National Public Security Bureau "Level 2 Heroic Model" , National Outstanding Party Member and Police Officer in the Political and Legal System, Jiangxi Provincial May 4th Medal, "Top Ten Sons of Jinggang" in Jiangxi Province, "Top Ten Political and Legal Officers in Ruichang City", "Excellent Communist Party Member in Ruichang City" and other honorary titles.

On April 28, 2015, a conference to celebrate the May Day International Labor Day and commend national model workers and advanced workers was grandly held in the Great Hall of the People in Beijing. It was learned from the Jiangxi Provincial Federation of Trade Unions that Zhou Junjun won the title of National Model Worker in 2015.