The Men's 50 metre butterfly S6 swimming event at the 2004 Summer Paralympics was competed on 25 September. It was won by Li Peng, representing .

1st round

Qualified for final round

Heat 1 25 Sept. 2004, morning session Rank Athlete Time Notes1 34.49 2 34.53 3 35.50 4 36.37 5 36.95 6 37.08

Heat 2 25 Sept. 2004, morning session Rank Athlete Time Notes1 32.51 WR2 33.09 3 34.26 4 37.20 5 38.31 6 38.78 7 40.78

Final round

25 Sept. 2004, evening session Rank Athlete Time Notes 32.82 33.07 33.56 4 34.20 5 34.34 6 35.17 7 35.96 8 37.05

References