The tournament featured three rounds of play with each round being a single-elimination game. In the first round, the first and eighth seeds, the second and seventh seeds, the third seed and sixth seeds, and the fourth seed and fifth seeds played with the winners advancing to the semifinals. In the semifinals, the highest and lowest seeds and second highest and second lowest seeds play with the winners advancing to the championship game. The tournament champion receives an automatic bid to the 1991 NCAA Division I Men's Ice Hockey Tournament.
Conference standings
Note: GP = Games played; W = Wins; L = Losses; T = Ties; PTS = Points; GF = Goals For; GA = Goals Against