| Final 20:55 | time | | L | | 1. Rikako Ikee |  Japan | 25.55s | GR | 4 | | 2. Wang Yichun |  China | 26.03s | | 3 | | 3. Lin Xintong | China | 26.39s | | 5 | | 4. Park Ye-rin |  South Korea | 26.53s | | 6 | | 5. An Se-hyeon | South Korea | 26.67s | | 7 | | 6. Quah Ting Wen |  Singapore | 26.73s | | 8 | | 7. Huang Mei-chien |  Taipei | 26.89s | | 2 | | 8. Chan Kin Lok |  Hong Kong | 27.22s | | 1 |
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| Venue: GBK Aquatic Center. |
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Heats - Monday 20.08 Morning session 09:13 |
| Ranking | time | | L | H | | 1. Rikako Ikee | Japan | 25.91s | Q | 4 | 4 | | 2. Lin Xintong | China | 26.56s | Q | 4 | 2 | | 3. Wang Yichun | China | 26.68s | Q | 4 | 3 | | 4. Park Ye-rin | South Korea | 26.72s | Q | 5 | 3 | | 5. Huang Mei-chien | Taipei | 26.98s | Q | 6 | 2 | | 6. An Se-hyeon | South Korea | 27.01s | Q | 5 | 2 | | 7. Chan Kin Lok | Hong Kong | 27.24s | Q | 3 | 2 | | 8. Quah Ting Wen | Singapore | 27.28s | Q | 3 | 4 | | eliminated in Heats | | 9. Quah Jing Wen | Singapore | 27.31s | | 6 | 4 | | 10.Chen Yu-rong | Taipei | 27.35s | | 6 | 3 | | 11.Ai Soma | Japan | 27.40s | | 5 | 4 | | 12.Jenjira Srisa-Ard |  Thailand | 27.54s | | 3 | 1 | | 13.Kornkarnjana Sapianchai | Thailand | 27.70s | | 3 | 3 | | 14.Sze Hang Yu | Hong Kong | 27.74s | | 2 | 4 | | 15.Anak Agung Istri Kania Ratih |  Indonesia | 28.25s | | 2 | 3 | | 16.Adinda Larasati Dewi | Indonesia | 28.77s | | 4 | 1 | | 17.Kuan I Cheng |  Macau | 29.83s | | 2 | 2 | | 18.Bisma Khan |  Pakistan | 30.02s | | 7 | 2 | | 19.Mishael Aisha Ayub | Pakistan | 32.22s | | 7 | 3 | | 20.Anastasiya Tyurina |  Tajikistan | 32.53s | | 1 | 3 | | 21.Kherlen Altanshagai |  Mongolia | 32.85s | | 1 | 4 | | 22.Karina Klimyk | Tajikistan | 33.94s | | 7 | 4 | | 23.Aishath Sausan |  Maldives | 34.40s | | 1 | 2 | | 24.Dania Nour |  Palestine | 34.66s | | 8 | 4 | | 25.Anmau Ahmed Saleem | Maldives | 35.83s | | 8 | 2 | | 26.Sompathana Chamberlain |  Laos | 36.82s | | 8 | 3 | | 27.Imelda Felicyta Ximenes Belo |  East Timor | 39.57s | | 5 | 1 |
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