1, common violations: such as walking with the ball, dribbling twice (double belt), kicking the ball (corner kick) or hitting the ball with the fist;

2. Jump ball violation: Before the jumper touches the ball, no one except the jumper is allowed to enter the central area of the jump ball. Basic rule 2: 24-second rule: When the attacker is in possession of the ball on the court, he must make a shot within 24 seconds (24 seconds in NBA, CBA, CUBA, WNBA and 35 seconds in NCAA).