In 2024, Luo Huan became the oldest women's artistic gymnast to represent China in history when she competed at the 2024 Summer Olympics in Paris, France.

Luo competed at the Pacific Rim Championships, winning the bronze medal with the Chinese team behind the United States and Canada.

Individually, Luo recorded the fourth highest score in the junior all-around winning gold on bars, behind Americans Bailie Key, Nia Dennis, and Norah Flatley and narrowly ahead of teammate Liu Tingting.

In the junior event finals, she won gold on the uneven bars, ahead of Key and Liu, and placed fourth on floor and eighth on vault.

She then delivered a strong performance in the all-around final to finish in fourth place behind Yao Jinnan, Shang, and Wang Yan, with less than a tenth of a point between her and the podium.

Representing the city of Ningbo in Zhejiang, Luo won a gold medal with her junior provincial team and placed fourth in the all-around behind Liu Tingting, Wang Cenyu, and Lu Yufei.

Luo made her senior international debut at the Doha World Challenge Cup in late March, competing only on balance beam.

[10] Luo began her season by competing at the Melbourne World Cup in February alongside Wang Yan and Liu Tingting.

[15] She placed first on uneven bars with a strong routine ahead of Zsófia Kovács of Hungary and Georgia-Rose Brown of Australia, winning her first senior international gold medal.

[16] She then improved on her qualifications ranking to take the bronze medal in the balance beam final behind teammate Liu and 2004 Olympic Champion Cătălina Ponor of Romania.

During the final, she recorded top-three scores on each event: second on vault behind Zhang Jin, second on bars behind Du Siyu, first on beam, and third on floor behind Chen and Liu Jingxing.

She then won the national championship on bars ahead of Du and Fan Yilin, and also placed sixth on beam and fourth on floor.

While she recorded the ninth highest score on balance beam, she advanced to the final following the exclusion of Zhao Shiting due to the two-per-province rule.

[27] In the team final, Luo and junior provincial teammate Guan Chenchen competed on all four events to lead Zhejiang to the bronze medal, returning to the podium for the first time in five years.

[3][27] In the all-around final, Luo improved on her score in qualifications by over a point to repeat as national champion ahead of Zhang Jin and Tang Xijing.

[28] Despite this error, she helped China qualify to the team final in first place, and individually won the silver-medal in the all-around behind Chen and ahead of Kim Su-jong.

In the uneven bars final, she performed a strong routine to win the silver medal behind teammate Liu Tingting and ahead of North Korean Jon Jang Mi.

[31] In the team final, Luo competed on uneven bars, where she delivered the fourth-highest score of the day, and on vault, similar to her contribution at the Asian Games.

However, she also stepped in to compete floor exercise following Liu Jinru's struggles in qualification on the apparatus, delivering a clean routine to help lead China to the bronze medal behind the United States and Russia.

[31] In the uneven bars final, Luo performed a strong routine and placed fourth behind Derwael, Simone Biles, and Elisabeth Seitz, ultimately missing the podium by one tenth.

[27][35] In the all-around final, Luo performed consistently to improve on her qualifications ranking and win the silver medal behind Liu by a margin of one point.

She competed in her third consecutive national uneven bars and balance beam event finals, but made errors in both and was not credited with her full difficulty on either apparatus.

[37] Despite her performance at the two previous competitions and a sixth-place finish at the final selection camp, Luo was not named to the team for the World Championships in Stuttgart, Germany in September.