|Full name||Zheng Long|
|Date of birth||15 April 1988|
|Place of birth||Qingdao, Shandong, China|
|Height||1.78 m (5 ft 10 in)|
|Playing position||Left winger|
|2013||→ Guangzhou Evergrande (loan)||7||(2)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 16 April 2017.
‡ National team caps and goals correct as of 16 April 2017
Zheng Long started his football career after he graduated from Qingdao Jonoon's youth academy in 2006. He made his debut for the club on 3 March 2007 in a 1-1 draw against Zhejiang Greentown. Throughout the 2007 season, he established himself as a regular for the team; however, it was during the 2008 season that saw Zheng establish himself as a prominent left-sided player and an expert free kick specialistwith five goals in 27 appearances.
On 19 July 2013, Zheng was loaned to fellow Chinese Super League side Guangzhou Evergrande until 31 December 2013. He made his debut for the club on 31 July 2013 in a 3-0 win against Beijing Guoan. Zheng permanently transferred to the club in the 2014 season after Qingdao was relegated from the top tier in the previous season. He didn't play any matches during the 2014 season due to a serious leg injury.
- As of 16 April 2017
|Club performance||League||Cup||League Cup||Continental||Other||Total|
|China PR||League||FA Cup||CSL Cup||Asia||Others1||Total|
|2006||Qingdao Jonoon||Chinese Super League||4||0||0||0||-||-||-||4||0|
- As of 10 September 2013
- Scores and results list China's goal tally first.
|1.||8 November 2009||Al Kuwait Sports Club Stadium, Kuwait City, Kuwait||Kuwait||1–1||2–2||Friendly international|
|2.||6 September 2013||Olympic Stadium, Tianjin, China||Singapore||5–1||6–1||Friendly international|
|4.||10 September 2013||Olympic Stadium, Tianjin, China||Malaysia||1–0||2–0||Friendly international|
- Chinese Super League: 2013, 2014, 2015, 2016
- AFC Champions League: 2013, 2015
- Chinese FA Cup: 2016
- Chinese FA Super Cup: 2016, 2017
- "曲波首开纪录徐宁扳平 中超首秀绿城1-1青岛 评". sports.sohu.com. 2007-03-03. Retrieved 2012-09-24.
- "Zhèng, Lóng". nationalfootballteams.com. Retrieved 2012-09-24.
- "郑龙正式加盟广州恒大足球俱乐部". Guangzhou Evergrande. 2013-07-19. Retrieved 2013-07-19.
- "国足3-1巴勒斯坦 曲波郜林进球杨智红牌 图 评". sports.sohu.com. 2009-07-18. Retrieved 2012-09-24.
- "国足2-2惜平科威特 郑龙韩鹏5分钟内连入两球". sports.qq.com. 2009-11-09. Retrieved 2013-09-06.
-  Player profile at sohu.com (Chinese)
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