He also played for Hangzhou Greentown, Jeju United FC, Shanghai Shenhua and Dalian Transcendence.
Yan Song started his professional football career with Dalian Shide F.C.
The move itself turned out to be a personal disaster, while Jeju United had a relatively successfully season Yan was completely dropped from the squad and the manager Park Kyung-Hoon only played in one Korean FA Cup.
[4] Yan Song made his international debut on 12 December 2002 when the Head coach Arie Haan included him in the starting line-up against Bahrain in a friendly game that ended in a 2–2 draw.
[6] Since 2007 he has lost his position within the national team to Mao Jianqing and Du Zhenyu preferred within the subsequent squads.