| Final 18:28 | time | | L | | 1. Xu Jiayu |  China | 24.75s | | 5 | | 2. Ryosuke Irie |  Japan | 24.88s | | 3 | | 3. Kang Ji-seok |  South Korea | 25.17s | | 6 | | 4. Wang Peng | China | 25.28s | | 2 | | 5. I Gede Siman Sudartawa |  Indonesia | 25.29s | | 4 | | 6. Quah Zheng Wen |  Singapore | 25.53s | | 7 | | 7. Lee Ju-ho | South Korea | 25.59s | | 1 | | 8. Merdan Atayev |  Turkmenistan | 25.88s | | 8 |
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| Venue: GBK Aquatic Center. |
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Heats - Monday 20.08 Morning session 09:22 |
| Ranking | time | | L | H | | 1. I Gede Siman Sudartawa | Indonesia | 25.01s | Q | 4 | 3 | | 2. Xu Jiayu | China | 25.12s | Q | 4 | 5 | | 3. Ryosuke Irie | Japan | 25.25s | Q | 3 | 5 | | 4. Kang Ji-seok | South Korea | 25.29s | Q | 4 | 4 | | 5. Wang Peng | China | 25.33s | Q | 5 | 3 | | 6. Quah Zheng Wen | Singapore | 25.54s | Q | 5 | 4 | | 7. Lee Ju-ho | South Korea | 25.67s | Q | 3 | 4 | | 8. Merdan Atayev | Turkmenistan | 26.08s | Q | 6 | 3 | | eliminated in Heats | | 9. Kasipat Chograthin |  Thailand | 26.13s | | 6 | 4 | | 10.Srihari Nataraj |  India | 26.19s | | 5 | 1 | | 11.Lê Nguyễn Paul |  Vietnam | 26.20s | | 5 | 5 | | 12.Masaki Kaneko | Japan | 26.23s | | 6 | 5 | | 13.Adil Kaskabay |  Kazakhstan | 26.30s | | 7 | 5 | | 14.Francis Fong | Singapore | 26.48s | | 2 | 4 | | 15.Chuang Mu-lun |  Taipei | 26.52s | | 7 | 4 | | 16.Ngou Pok Man |  Macau | 26.53s | | 1 | 4 | | 17.Akalanka Peiris |  Sri Lanka | 26.57s | | 7 | 3 | | 18.Chang Hou-chi | Taipei | 26.67s | | 2 | 3 | | 19.Ricky Anggawijaya | Indonesia | 26.82s | | 2 | 5 | | 20.Tern Jian Han |  Malaysia | 26.88s | | 3 | 3 | | 21.Arvind Mani | India | 26.89s | | 6 | 1 | | 22.Lau Shiu Yue |  Hong Kong | 26.93s | | 1 | 5 | | 23.Cheung Yau Ming | Hong Kong | 26.99s | | 1 | 3 | | 24.Syed Muhammad Naseeb Tariq |  Pakistan | 27.31s | | 8 | 5 | | 25.Navaphat Wongcharoen | Thailand | 27.37s | | 8 | 4 | | 26.Mohammed Bedour |  Jordan | 27.40s | | 8 | 3 | | 27.Noah Al-Khulaifi |  Qatar | 28.75s | | 3 | 1 | | 28.Abdulaziz Al-Obaidly | Qatar | 28.78s | | 4 | 2 | | 29.Mohammad Yahya Khan | Pakistan | 28.79s | | 5 | 2 | | 30.Yum Cheng Man | Macau | 28.88s | | 3 | 2 | | 31.Buyantogtokh Boldbaatar |  Mongolia | 29.72s | | 6 | 2 | | 32.Keouodom Lim |  Cambodia | 30.68s | | 2 | 2 | | 33.Santisouk Inthavong |  Laos | 31.09s | | 7 | 2 | | 34.Olimjon Ishanov |  Tajikistan | 31.87s | | 7 | 1 | | 35.Haish Hassan Hussain |  Maldives | 31.95s | | 1 | 2 | | 36.Imaan Ali | Maldives | 32.47s | | 4 | 1 | | 37.Ramziyor Khorkashov | Tajikistan | 33.21s | | 2 | 1 | | 38.Bat-Od Buman-Uchral | Mongolia | 33.56s | | 8 | 2 |
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