Sport referees role is most important in order to make it interesting, fair. Theory and practice of type of sport which connected to the referee. There are special requires. These requires include a modern sport referee. Changes and improvements of sport competitions demand for using of referees effectively. This article presents the form of modern sport referee. Sport referee is a master who organize sport competitions objective evolution of sportsmen, and supervise the results. He supervise with the help his knowledge and experiment in order to make the rules of competitions in order (table 1).