The objective of this review article is to introduce and illustrate the Video Assistant Referee (VAR) system in 2018 World Cup Russia developed by FIFA using literature review, content analysis, descriptive research reports during the World Cup, and self narratives as an international football referee. The article aims to provide suggestions toward future improvements in areas of sport refereeing research and practical football refereeing. VAR system is introduced in 2018 World Cup Russia, marking this year’s event the first in World Cup history and highest competition level the system being used. FIFA describes four kinds of incidents initiate official VAR system procedure, including incidents related to goals, incidents related to penalty kicks, incidents related to direct red card offence, and incidents of misidentification during the disciplinary sanctions. FIFA and IFAB also amended VAR’s authority and duty, and signals and procedures to the Laws of the Game in 2018/19 season. VAR system can help avoid obvious mistakes made by the referee and also transform sport psychology and tactics of the game in modern football. Although there are still ethical debates regarding technology and humanity in sports, VAR system nonetheless reduces unnecessary mistakes, and credits should be given for approaching fairness in football.