First: Because there is a lot of physical contact in the basketball game, it is not easy to find that clothes are not stuffed into pants when there is a foul such as pulling, so it must be stuffed into pants for fairness.

Second, it is convenient for athletes to be sensitive when doing their own movements. If clothes are scattered outside, it is easy to hurt players, and it is easier to hurt yourself when playing, such as clothes hanging on other players' arms or basketball stands.