| Final 18:06 | time | | L | | 1. Satomi Suzuki |  Japan | 30.83s | GR | 4 | | 2. Roanne Ho |  Singapore | 31.23s | | 7 | | 3. Feng Junyang |  China | 31.24s | | 5 | | 4. Suo Ran | China | 31.42s | | 6 | | 5. Phee Jinq En |  Malaysia | 31.64s | | 2 | | 6. Lin Pei-wun |  Taipei | 31.72s | | 1 | | 7. Adelaida Pchelintseva |  Kazakhstan | 31.94s | | 8 | | -. Miho Teramura | Japan | DSQ | | 3 |
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| Venue: GBK Aquatic Center. |
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Heats - Thursday 23.08 Morning session 09:00 |
| Ranking | time | | L | H | | 1. Satomi Suzuki | Japan | 31.02s | Q | 4 | 4 | | 2. Feng Junyang | China | 31.16s | Q | 3 | 4 | | 3. Miho Teramura | Japan | 31.26s | Q | 4 | 3 | | 4. Suo Ran | China | 31.38s | Q | 5 | 2 | | 5. Phee Jinq En | Malaysia | 31.46s | Q | 3 | 3 | | 6. Roanne Ho | Singapore | 31.59s | Q | 4 | 2 | | 7. Lin Pei-wun | Taipei | 31.77s | Q | 5 | 3 | | 8. Adelaida Pchelintseva | Kazakhstan | 31.94s | Q | 6 | 2 | | eliminated in Heats | | 9. Yvette Kong |  Hong Kong | 31.98s | | 6 | 4 | | 10.Back Su-yeon |  South Korea | 32.34s | | 2 | 2 | | 11.Kim Hye-jin | South Korea | 32.44s | | 5 | 4 | | 12.Anandia Evato |  Indonesia | 32.61s | | 2 | 4 | | 13.Jenjira Srisa-Ard |  Thailand | 32.62s | | 3 | 2 | | 14.Samantha Yeo | Singapore | 32.74s | | 2 | 3 | | 15.Rainbow Ip | Hong Kong | 32.84s | | 6 | 3 | | 16.Lei On Kei |  Macau | 33.24s | | 7 | 4 | | 17.Ngô Thị Ngọc Quỳnh |  Vietnam | 33.89s | | 7 | 3 | | 18.Cheang Weng Lam | Macau | 33.93s | | 7 | 2 | | 19.Jang Myong-gyong |  North Korea | 34.95s | | 1 | 4 | | 20.Anak Agung Istri Kania Ratih | Indonesia | 35.15s | | 7 | 1 | | 21.Voleak Sok |  Cambodia | 36.00s | | 1 | 3 | | 22.Mera Abushammaleh |  Palestine | 37.10s | | 8 | 3 | | 23.Mishael Aisha Ayub |  Pakistan | 37.15s | | 8 | 4 | | 24.Amingoo Temuujin |  Mongolia | 38.60s | | 1 | 2 | | 25.Karina Klimyk |  Tajikistan | 39.26s | | 4 | 1 | | 26.Tisa Shakya |  Nepal | 39.46s | | 5 | 1 | | 27.Khadiza Akter |  Bangladesh | 39.57s | | 8 | 2 | | 28.Siri Arun Budcharern |  Laos | 39.85s | | 3 | 1 | | 29.Aishath Sajina |  Maldives | 41.34s | | 2 | 1 | | 30.Aishath Hulva Khulail | Maldives | 42.08s | | 6 | 1 |
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