Abstract: By way of mathematical statistics and logical reasoning, the paper makes an empirical study of the relationship between competitive state and competition performance, trying to find out the factors influencing team competitive state. The results show that the premier league football teams’ competitive state stability and their rankings in the league has high linear correlation. The smaller the standard deviation is, the less the number of low tides is, the smaller the number of teams’ matches in low tide is; Teams of champion level is significantly different from strong teams in competitive state stability, and the competition state stability of champion teams is obviously better than that of strong teams. The study provides a practical reference for coaches to adjust the competitive state of their football teams and to make reasonable arrangement for training and competition.