Tan Wangsong would start his career with Sichuan Guancheng where he would establish himself as the first choice right-back within the team, although he was considered a relatively thin player he endeared himself towards the coaching staff with his vigorous and bold style of play.
[4] On 13 June 2009 in a league game that Tianjin Teda was losing 1–0 against Beijing Guoan, Tan was red-carded in the 90th minute for a high tackle against Yang Zhi.
[5] Tan would receive a five-game ban and along with his red card against Belgium on 10 August 2008 while representing the Chinese U-23 team in the 2008 Olympics, a reputation as a dirty player.
[8] On 23 December 2016, Chongqing Lifan officially confirmed that Tan had left the club after a disagreement in negotiations for extending his contract.
In an unusual occurrence that received international attention, in the match against Belgium on August 10, 2008, Tan was red-carded for kicking Sébastien Pocognoli in the crotch.