| Incheon Asiad Main Stadium - Track. Start time: 20:50 |   
| Final | time |   | L | React. | Birth | bib |  | 1. Ali Khamis Abbas Ali Khamis |  BRN | 49.71s |   | 8 | 0.163 | 30 Jun 1995 | 104 |  | 2. Takayuki Kishimoto |  JPN | 49.81s |   | 3 | 0.125 | 06 May 1990 | 238 |  | 3. Wen Cheng |  CHN | 50.29s |   | 7 | 0.207 | 06 Apr 1989 | 130 |  | 4. Almas Jasem W A A |  KUW | 50.80s |   | 2 | 0.159 | 05 Feb 1990 | 340 |  | 5. Chieh Chen |  TPE | 51.10s |   | 5 | 0.191 | 08 May 1992 | 480 |  | 6. Eric Shauwn Cray |  PHI | 51.47s |   | 6 | 0.162 | 06 Nov 1988 | 399 |  | 7. Chia Hsuan Yu |  TPE | 51.84s |   | 4 | 0.168 | 22 Jan 1995 | 481 |  | 8. Jithin Paul |  IND | DQ R162.7 | 9 | F1 | 13 Mar 1990 | 178 |   
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|  Records |  | WR | 46.78s | Kevin Young (USA) | Barcelona (ESP) | Olympic Games | 06 Aug 1992 |  | AS | 47.53s | Hadi Soua'An Al Somaily (KSA) | Sydney, NSW (AUS) | Olympic Games | 27 Sep 2000 |  | GR | 48.42s | Hadi Soua'An Al Somaily (KSA) | Busan (KOR) | Asian Games | 08 Oct 2002 |   
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 |   |  | First 2 and Best 2 progress to the Final. 3 Heats, - Athletes. |   Heat 1 10:55 |   
| Ranking | time |   | L | React. | Birth | bib |  | 1. Chieh Chen |  TPE | 50.11s |   | 7 | 0.197 | 08 May 1992 | 480 |  | 2. Ali Khamis Abbas Ali Khamis |  BRN | 50.22s |   | 4 | 0.185 | 30 Jun 1995 | 104 |  | 3. Ganapathiplackal Abraham J. |  IND | 51.04s |   | 6 | 0.171 | 11 Sep 1981 | 177 |  | 4. Mustafa Ammar Obaid Shaheen |  IRQ | 51.15s | PB | 8 | 0.193 | 18 Jan 1994 | 220 |  | 5. Ke Chen |  CHN | 51.77s |   | 3 | 0.186 | 14 Sep 1989 | 131 |  | 6. Ali Hazer |  LIB | 54.66s |   | 5 | 0.176 | 18 Aug 1984 | 354 |   
| Ranking | time |   | L | React. | Birth | bib |  | 1. Chia Hsuan Yu |  TPE | 51.63s |   | 4 | 0.155 | 22 Jan 1995 | 481 |  | 2. Jithin Paul |  IND | 51.76s |   | 6 | 0.231 | 13 Mar 1990 | 178 |  | 3. Dmitriy Koblov |  KAZ | 52.01s |   | 3 | 0.163 | 30 Nov 1992 | 261 |  | 4. Karam Yousef M Z H |  KUW | 52.15s |   | 7 | 0.183 | 15 Jul 1993 | 341 |  | 5. Ka Chun Chan |  HKG | 52.65s |   | 5 | 0.174 | 19 Dec 1989 | 165 |   
| Ranking | time |   | L | React. | Birth | bib |  | 1. Wen Cheng |  CHN | 49.89s | SB | 3 | 0.171 | 06 Apr 1989 | 130 |  | 2. Eric Shauwn Cray |  PHI | 50.00s | PB | 8 | 0.154 | 06 Nov 1988 | 399 |  | 3. Takayuki Kishimoto |  JPN | 50.27s |   | 6 | 0.140 | 06 May 1990 | 238 |  | 4. Almas Jasem W A A |  KUW | 50.50s | PB | 7 | 0.157 | 05 Feb 1990 | 340 |  | 5. Seungyoon Lee |  KOR | 51.19s |   | 4 | 0.175 | 28 Feb 1989 | 290 |  | 6. Artem Dyatlov |  UZB | 51.70s |   | 5 | 0.159 | 22 May 1989 | 499 |   
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