The lowest-ranked 20 teams were placed in 6 preliminary qualifying groups of 3 and one group of 2, with the group winners joining the remaining 21 teams in 7 groups of 4. The top two of each of these groups qualified for the finals in China.

Notes:

¹ Bold indicates champion for that year

² Italic indicates host

This competition saw a huge number of surprises. The first surprise named Bahrain was in group A, which, despite being just its second tournament, held on China and fellow neighbor Qatar before beating Indonesia 3–1, with the Hubail brothers Mohamed and Ala'a instrumental in bringing Bahrain to the quarter-finals. Host China, after a shock draw to Bahrain, easily progressed to the next round after thrashing Indonesia 5–0 before Xu Yunlong scored the decisive goal in China's hard fought win over Qatar to process.

In group B, Jordan emerged as a second surprise, as the country just made its debut in the competition. Jordan surprised the whole tournament by two draws to the United Arab Emirates and, especially, a successful goalless draw to South Korea which had already finished in fourth place at the 2002 FIFA World Cup earlier, between that, Jordan shocked Kuwait with two late goals to seal a 2–0 victory, thus finishing second and progressed to the next round alongside South Korea, which, after being held by Jordan, decisively beat Kuwait and the United Arab Emirates to progress.

The two other debutants were Turkmenistan and Oman in group C and D surprised by not finishing bottom in their group, though they failed to progress. Instead, it was the two experienced Saudi Arabia and Thailand which disappointed most of fans, finishing bottom after disastrous performances. In group C, Uzbekistan also surprised by topping the group with three straight 1–0 win while Japan and Iran were able to progress in group D after a final goalless draw and better result than Oman. Iraq was the other qualifier in group C, after beating both Turkmenistan and Saudi Arabia only by one goal margin.

The quarter-finals saw Jordan caused significant problem for Japan, and Jordan was thought to have almost qualified for the semi-finals in the penalty shootout. However, four straight misses later cost Jordan's semi-final dream to end. Uzbekistan and Bahrain held on in a 2–2 draw and Bahrain prevailed after penalty shootout. Host China easily crushed Iraq 3–0, with Zheng Zhi scored two penalties to take Iraq home, while South Korea and Iran created the most phenomenon match in the tournament, an insane thriller where Iran prevailed 4–3 in what would be perceived as the greatest Asian Cup match in the history.

The first semi-final saw Iran and host China battling for the final, with both being held 1–1, despite Iran was down to ten men. China eventually won in penalty shootout. The other semi-final was another insane thriller between Bahrain and Japan, with the Japanese won after extra times thanked for a goal by Keiji Tamada in early minutes of the first half of extra times, thus sent Japan to the final against host China. Iran overcame Bahrain in a consolidating third place encounter, 4–2, to acquire bronze.

The final in Beijing saw China lose to Japan, with a controversial handball goal by Koji Nakata that sealed the game.^[2] The win meant Japan had successfully defended their title they achieved four years ago. The outcome frustrated many Chinese supporters, who ended up rioting outside Workers' Stadium over referee's controversial decision allowing the handball goal of Koji Nakata.

Referees

Assistant Referees

All times are China standard time (UTC+8)

Group A edit

Group B edit

Group C edit

Group D edit

All times are China standard time (UTC+8)

Quarter-finals edit

Semi-finals edit

Third place playoff edit

Final edit

Goalscorers edit

With five goals, A'ala Hubail and Ali Karimi are the top scorers in the tournament. In total, 96 goals were scored by 58 different players, with two of them credited as own goals.

5 goals

4 goals

•   Lee Dong-gook

3 goals

2 goals

1 goal

Own goals

•   Park Jin-seop (1) (for Iran)
•   Rangsan Viwatchaichok (1) (for Oman)
•   Basheer Saeed (1) (for Kuwait)

Most Valuable Player

•   Shunsuke Nakamura

Top Scorer

•   A'ala Hubail
•   Ali Karimi

Fair-Play Award

•   China

Team of the Tournament^[3][4]

Official match ball edit

The official match ball for the tournament was the Adidas Roteiro.^[5]

Official mascot edit

Official mascot was Bei Bei

Official song edit

The AFC selected "宣言 (Declaration)", "Take Me To The Sky" (Englilsh Version Title) by Chinese singer Tiger Hu as the tournament's official song.^[6][7]

Like other sports events, the Asian Cup 2004 was publicised as evidence of China's economic and athletic progress, being referred to by some as a prelude to the 2008 Summer Olympics. Many Chinese see the tournament as a success and take great pride in having showcased such an important sporting event in advance of the Olympic Games. However, the Japanese media and many other international observers have pointed out bad manners on the part of Chinese fans, and sparse attendance at the tournament, raising questions on China's ability to hold such sporting events. ^{[citation needed]}

There was also significant controversy over the refereeing of various matches in the tournament relating to the host China PR, specifically on China 3-0 Iraq and China 1-1 Iran. The match between China and Iraq featured a controversial penalty awarded to Zheng Zhi, while the two red cards awarded to Iran and the neglection of Zhang Yaokun's deliberate violent conduct during the second half of the match was also questioned by authorities such as the head coach of Islamic Republic of Iran.

Throughout the tournament, most Chinese fans in the stadia expressed anti-Japanese sentiments by drowning out the Japanese national anthem, displaying political banners and booing whenever Japan got the ball, regardless of the score or opponent. This was reported by the international media, and was aggravated when Koji Nakata apparently knocked in the ball with his right hand in the final.^[8] The PRC government responded by calling for restraint and increasing police numbers to maintain order. The Japanese government also called on the PRC to ensure the safety of Japanese fans,^[9] while specifically asking Japanese nationals or people of Japanese origin to not display any form of excessive pride. Despite the Chinese government's campaign, a riot started by Chinese fans broke out near the north gate of the Workers' Stadium, though reports differ as to the extent of the riot. As a result, some media groups have said that displays of "excessive Chinese nationalism during the Beijing 2008 Summer Olympics have become a cause for concern for Chinese officials".

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