Li Ang started his football career with Jiangsu Suning in 2014 after playing for Jiangsu Youth during the 2011 season and the 2012 season.[1] He made his debut for the club in a league game on 8 March 2014 in a 0-0 draw against Guizhou Renhe.[2] He scored his first goal for the club in a league game on 11 May 2014 in a 1-0 win against Changchun Yatai.[3] Throughout the season he would go on to establish himself as an integral member of the team and would play in the 2014 Chinese FA Cup, which the club lost 5-4 on aggregate to Shandong Luneng Taishan.[4] The following season Li would continue to cement his position within the team and go to win the 2015 Chinese FA Cup against Shanghai Shenhua.[5]
Li would go on to be a consistent presence within the team as he won the 2020 Chinese Super League title with the club.[6] On 28 February 2021, the parent company of the club Suning Holdings Group announced that operations were going to cease immediately due to financial difficulties.[7] On 12 March 2021, Li was free to transfer to fellow top tier club Shanghai Port.[8] He would make his debut for the club in a league game on 22 April 2021 against Tianjin Jinmen Tiger in a 6-1 victory.[9]