Abstract: The basic theories and the evaluation dimension of the rationality of sports competition rules are analyzed in the paper by reviewing literature and combining some practical competition examples. It is believed that sports competition rules should be analyzed from the dimensions of rationality for value, tool and form. Value rationality should be the first criterion for players' competition and referees' judgment when contradictions are witnessed among them. The use of rule loopholes on the part of athletes does not violate the public and formal rules, but it takes advantage of the hidden rules in sports competition, which violates the commonly agreed rules, damages sportsmanship and ruins the educational value and demonstration effects of competitive sports.

Key words: sports competition rules, rationality, evaluation dimensions