[3] In her pro-debut on October 11, 2008, Choi won the vacant WBA female featherweight World championship by beating Xu Chunyan of China.

[3] Choi won the vacant interim WBA female super-flyweight title thanks to a unanimous decision win over Emiko Raika from Japan on 15 August 2013.

[5][6] She won the vacant WBF female super-featherweight World title on 21 May 2016, defeating South Africa's Unathi Myekeni by unanimous decision.

[7] In December 2023, the WBA made Choi "Champion in Recess" after she filed a medical exemption and was ruled unfit to defend her title by the sanctioning body’s annual convention in Orlando, Florida, USA.

[5] After 22 fights unbeaten spanning almost 16 years, Choi suffered the first defeat of her professional boxing career on 27 April 2024, losing to Canada's Jessica Camara by split decision in a contest for the vacant WBA female lightweight Gold title at Ajou University, Suwon, South Korea.