On the law enforcement of linesman in football match

Duties Two assistant referees should be appointed for each game, and their duties (determined by the referees) should be to signal that when the ball passes through the playing field as a whole; Which team should kick a corner kick, goal kick or throw a foul ball; When can an offside player be punished? When it is necessary to change players; When misconduct or any other event occurs outside the sight of the referee; Whenever a foul occurs, the assistant referee is closer to the foul place than the referee (especially when the foul occurs in the penalty area); When kicking a penalty, does the goalkeeper move forward before the ball is kicked, and does the ball enter the door after being kicked? Assist the assistant referee and also assist the referee to control the game according to the rules of the game. Under special circumstances, the assistant referee can enter the venue to assist the referee in controlling 9. Distance15m. If the assistant referee has excessive intervention or improper performance, the referee can remove him from his post and report to the relevant departments, and the referee and the assistant referee will coordinate. (1) Offside penalty is an important task for assistant referees to assist referees. The referee should always keep in touch with the assistant referees in the same half, which is the first condition to avoid "missing the flag". (2) Because the first condition for judging offside is whether the player is offside at the moment of kicking (touching) the ball, the referee thinks that the player of the attacking party may be offside when the player kicks forward in the game, that is, we should pay attention to whether the assistant referee has the offside sign. Sometimes I think that the assistant referee will look at the flag for the second time at an appropriate moment because of the slow flag raising. (3) In order to help the referee master the offside penalty, the assistant referee is always flush with the second-to-last defender of the defender and always keeps an eye on the attacker. It is important to broaden your horizons and observation range, which helps to judge whether the players on the same team are offside when playing football. If a player is found offside, he should raise the flag to signal the referee in time, and the referee should blow his whistle in time to punish the offside foul. (4) Although the offside penalty of the referee needs the assistance of the assistant referee to a great extent, the referee should never give up his subjective observation and judgment, so as to be aware of it. (5) When the referee sees the assistant referee's offside flag and thinks that there is no need or penalty, he should reply with a concise signal, and the assistant referee should withdraw the flag in time (this situation should be avoided as far as possible on the court). (6) If the assistant referee's offside flag is correct and the referee misses the flag, there may be two situations: 1, the ball is intercepted by the opponent or kicked into a dead ball, and the threat to the defender caused by offside no longer exists, so the assistant referee should take back the flag in time. 2. The threat of offside players to defenders still exists. If you continue to attack, you may score a goal or have already shot the ball. At this time, after the assistant referee found it, he should stick the flag displayed above and let the referee correct it. This is only a remedy, and the referee should try to avoid missing the flag. (7) When the attacker kicks a free kick near the penalty area, if the referee is responsible for observing offside, the assistant referee must run to the goal line to see if the ball enters the door. Two people form a diagonal line. It is absolutely impossible to form two people standing in a straight line on the court. When the attacking player is not offside and the ball enters the goal after the kick-off, the assistant referee should return to his original position in time to observe offside.