The　badminton　gymnasium　of　Beijing　University　of　Technology　is　one　of　the　newly　built　gymnasiums　for　the　Beijing　2008　Olympic　Games.　According　to　the　design　requirement,　the　air　velocity　of　9m　above　the　playing　field　should　be　less　than　0.2m/s.　In　order　to　meet　the　design　requirement,　this　paper　uses　the　methods　of　Computational　Fluid　Dynamics　(CFD)　technology　and　test　to　optimize　the　original　design,　and　puts　forward　an　implementary　scheme.　The　results　of　the　final　acceptance　show　that　the　air　velocity　in　the　playing　field　is　less　than　0.2m/s,　which　meets　the　design　requirement.