Dong Yanfeng would play for the Dalian Aerbin (now known as Dalian Professional) youth team before being selected by the Liaoning Football Association who were allowed to field a team called Liaoning Youth within 2013 China League Two season.
Starting his professional football career with them, on 12 May 2013, he scored his first senior goal in a 3–3 home draw with Shenyang Dongjin.
[1] When the season ended he would remain with Liaoning as they participated within the football at the 2013 National Games of China, in a tournament that they won.
[4] He scored his first goal for the club on 24 September 2016 in a 2–0 home win over Guizhou Zhicheng.
On 29 April 2018, he made his Super League debut in a 1–0 away defeat against Shanghai Greenland Shenhua, coming on as a substitute for Zheng Jianfeng in the 70th minute.