Through document information analysis,this paper analyzed the speed distribution feature for world woman 400m run.

Analyzes the domestic and foreign outstanding Female 400m Hurdle athletes to assign the entire speed reasonably,between the Hurdle the step and the transformation suspends leg\'s factors and so on ability,discovered that our country Female 400m Hurdle athletes have the big difference in the speed assignment and the movement thythm aspect and the overseas top athlete.

Rules and features of male 400m race;

Study on the speed distribution of modern men 400m;