The flyweight competition was the second-lowest weight class featured in amateur boxing at the 2008 Summer Olympics, and was held at the Workers Indoor Arena.
Flyweights were limited to a maximum of 51 kilograms (112.4 lbs) in body mass.
Like all Olympic boxing events, the competition was a straight single-elimination tournament.
Both semifinal losers were awarded bronze medals, so no boxers competed again after their first loss.
Punches scored only if the white area on the front of the glove made full contact with the front of the head or torso of the opponent.