The 2009 China League One was the sixth season since the establishment. The season kicked off on 28 March 2009 and ended on 25 October 2009.
Winners and runners-up were promoted to Chinese Super Leaguenext season and the last placed team was relegated to League Two. League One would be expanded to 14 teams the season after.
Zhu Zhengrong of Shanghai East Asia scored the first hat-trick of the season against Sichuan at Shanghai Stadium on 28 August 2009.
Léo Gamalho of Shenyang Dongjin scored the second hat-trick of the season against Nanchang Bayi Hengyuan at Shenyang Olympic Stadium on 10 October 2009.
Martin García of Nanchang Bayi Hengyuan scored the third hat-trick of the season against Nanjing Yoyo at Bayi Stadium on 25 October 2009.
After 2008 season, Jiangsu Sainty and Chongqing Lifan were promoted to 2009 Chinese Super League and Yantai Yiteng were relegated to 2009 China League Two. They were replaced by Guangdong Sunray Cave and Shenyang Dongjin which were promoted from 2008 China League Two and Liaoning Whowin who were relegated from 2008 Chinese Super League.
Updated to games played on 25 Oct 2009[2]