Abstract: In order to build "the world first class" professional league, provide people with better competitive products, and suggestions on further optimizing the league's competition system, the present paper studies the case of the 2014-2015 season competition reform by using literature, expert interviews and other methods. The results show that: 1)the reform target mainly includes five aspects: competition fairness, appreciation, balance, health and uniqueness; 2) the system of coach's application for video playback promotes the fairness of the league, and compensates for referees' miscarriage of judgments, but still need to be improved; 3)the rule on single foreign aid in the 4th section increases domestic players' chance of playing time, but the appreciation decreases. The rule increases the strength of teams with foreign aids from Asia, but decreases the competitiveness of teams of middle level; 4) Judge committee system realizes the goal of clubs managing referees independently , but still need relevant supporting measures; 5) the joint punishment system on coaches' failure to stop athletes conflict has significant effect, but can not eliminate the real problems. Recommendations: increase the number of video playback and the number of times; rationally treat the three foreign aids rule; establish the arbitration committee of referee appeal as soon as possible, and adopt the "CBA Professional Referee Salary Standard and Various Kinds of Security system", implement the court violence prevention special training assessment and multi-department joint conference system to ensure the punishment timely, accurate, scientific and diverse.

Key words: CBA League, video playback, professional referee, foreign aid system, court violence, league reform