| Final 19:16 | time | | L | | 1. Kanako Watanabe |  Japan | 2:23.05 | | 4 | | 2. Yu Jingyao |  China | 2:23.31 | | 6 | | 3. Reona Aoki | Japan | 2:23.33 | | 3 | | 4. Zhang Xinyu | China | 2:26.24 | | 5 | | 5. Back Su-yeon |  South Korea | 2:28.48 | | 2 | | 6. Jamie Yeung |  Hong Kong | 2:29.81 | | 7 | | 7. Lin Pei-wun |  Taipei | 2:33.39 | | 8 | | 8. Samantha Yeo |  Singapore | 2:33.75 | | 1 |
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| Venue: GBK Aquatic Center. |
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Heats - Monday 20.08 Morning session 09:58 |
| Ranking | time | | L | H | | 1. Kanako Watanabe | Japan | 2:27.05 | Q | 4 | 2 | | 2. Zhang Xinyu | China | 2:28.48 | Q | 5 | 2 | | 3. Reona Aoki | Japan | 2:29.16 | Q | 4 | 3 | | 4. Yu Jingyao | China | 2:29.76 | Q | 4 | 1 | | 5. Back Su-yeon | South Korea | 2:30.63 | Q | 5 | 3 | | 6. Jamie Yeung | Hong Kong | 2:32.05 | Q | 6 | 3 | | 7. Samantha Yeo | Singapore | 2:33.74 | Q | 3 | 3 | | 8. Lin Pei-wun | Taipei | 2:35.16 | Q | 6 | 1 | | eliminated in Heats | | 9. Anandia Evato |  Indonesia | 2:35.33 | | 3 | 2 | | 10.Azzahra Permatahani | Indonesia | 2:35.71 | | 7 | 2 | | 11.im Hye-jin | South Korea | 2:36.26 | | 5 | 1 | | 12.Wang Chin Lam | Hong Kong | 2:40.52 | | 6 | 2 | | 13.Ngô Thị Ngọc Quỳnh |  Vietnam | 2:44.84 | | 3 | 1 | | 14.Cheang Weng Lam |  Macau | 2:48.37 | | 2 | 3 | | 15.Nooran Ba Matraf |  Yemen | 2:53.11 | | 2 | 2 | | 16.Mera Abushammaleh |  Palestine | 2:55.44 | | 2 | 1 | | 17.Aishath Hulva Khulail |  Maldives | 3:34.83 | | 7 | 3 |
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