Career
Since then he joined Hangzhou Greentown and then later South Korean side Jeju United Football Club before returning to China. Yan Song would start his professional football career with F.C. in the 1999 league season and would make an immediate impact in establishing himself within the team by playing in twenty league games and scoring four goals. Yan Song transferred to Zhejiang Lücheng at the beginning of the 2008 Chinese Super League season where he established himself as a regular playing in twenty six league games and scoring four goals.
In February 2010 Yan moved to South Korean to join K-League side Jeju United, the move would see him being the fourth Chinese football player in K-League history.
The following season Yan returned to at the beginning of the 2011 league season, however his return was not very successful and he only made a handful of games before he moved to top tier side Shanghai Shenhua half-way through the 2012 league season. On February 2014, Yan transferred to Dalian Transcendence.
After his impressive displays for he was eventually called up to the national team in 2002. He was called into the national team throughout 2004 playing in several Fifa world cup qualifiers and AFC Asian Cup squads.
Since 2007 he has lost his position within the national team to Mao Jianqing and Du Zhenyu preferred within the subsequent squads.
Club Country.