On 10 September 2024, Chinese Football Association announced that Xu was banned from football-related activities for lifetime for involving in match-fixing.
[1][2] Xu Junmin would be part of the Shanghai Lucky Star Youth Training program before joining Chinese Super League side Shanghai Shenhua who loaned him out to lower league Spanish club CF Crack's.
[3] On 27 May 2016, he made his debut for Shenhua in the 2016 Chinese Super League against Tianjin Teda, coming on as a substitute for Cao Yunding in the 89th minute.
[6] After two seasons at the club, the owner would admit to financial difficulties, which unfortunately saw Xu be part of the team that was relegated and disbanded at the end of the 2019 China League One campaign.
[10] He would then go on to establish himself as regular within the team that won the division and promotion to the top tier at the end of the 2022 China League One campaign.