Early career Xiong made her professional MMA debut in 2014, fighting exclusively in
Kunlun Fight and amassed a record of 10–1 before signing with
ONE Championship.
ONE Championship Xiong made her promotional debut on December 9, 2017, at
ONE Championship: Warriors of the World beating April Osenio.
ONE Women's Strawweight World Champion Xiong then faced Tiffany Teo for the inaugural strawweight title on January 20, 2018, at
ONE Championship: Kings of Courage. She stopped the Singaporean in the fourth round to win the
ONE Women's Strawweight Championship belt. With the win, she became the first Chinese World Champion in mixed martial arts history. Xiong was scheduled to make her first title defense against Laura Balin at
ONE Championship: Battle for the Heavens on May 26, 2018. However, the whole event was cancelled and Xiong went on to successfully defend her title at
ONE Championship: Pinnacle of Power on June 23, 2018. Subsequently, Xiong successfully defended the title against Samara Santos Cunha at
ONE Championship: Beyond the Horizon on September 8, 2018. Xiong was scheduled to defend her title against reigning
ONE Championship Atomweight Champion Angela Lee at
ONE Championship: Heart of the Lion on November 9, 2018. However, on November 5, 2018, Lee revealed that she was forced off the card due to a back injury. The bout eventually took place at
ONE Championship: A New Era, where Xiong became the first fighter to ever beat Lee.
Challenging for the Atomweight title Xiong and Lee fought again in a rematch this time for Lee's Atomweight Championship at
ONE Championship: Century Part 1 on October 13, 2019. Xiong lost by submission.
Return to Strawweight She returned to strawweight to defend her
ONE Women's Strawweight Championship at
ONE Championship: Inside the Matrix in a rematch of the championship fight that first earned her title against Tiffany Teo. Surviving a late surge from Tiffany, Xiong defended her title, winning the fight via unanimous decision. Xiong was then scheduled to defend her
ONE Women's Strawweight Championship against
Michelle Nicolini at
ONE Championship: Empower on May 28, 2021. However, the event was postponed to take place on September 3, 2021, due to the
COVID-19 pandemic. She won the bout via unanimous decision, avoiding going to the ground with her opponent and winning the striking exchanges. Xiong defended her title against Ayaka Miura on January 14, 2022, at
ONE: Heavy Hitters. She won the bout in dominant fashion via unanimous decision. Xiong made her seventh strawweight title defense against the
ONE Women's Atomweight (115 lbs) champion Angela Lee at
ONE on Prime Video 2 on September 30, 2022. She retained her title by unanimous decision. Xiong faced Nat "Wondergirl" Jaroonsak in a special-rules striking match where both fighters will only be allowed to punch using
4-oz gloves at
ONE Fight Night 14 on September 29, 2023. At the weigh-ins, Xiong failed hydration despite making weight. The bout proceeded at a catchweight of 129 lbs, with Xiong being fined a percentage of her purse, which went to her opponent. She won the fight via technical knockout in the third round. Xiong was scheduled to defend her
ONE Women's Strawweight World Championship against
Stamp Fairtex at
ONE 168 on September 6, 2024. However, Stamp pulled out due to injury and the fight was canceled. On March 26, 2026, it was announced that ONE Championship was shutting down the Women's Strawweight MMA division and releasing Xiong.
Ultimate Fighting Championship On April 10, 2026, it was reported that Xiong signed with the UFC and is scheduled to make her debut against
Angela Hill on May 30, 2026 at
UFC Fight Night 277. == Gym affiliation ==