Top 4 teams in last season's league are qualified for the Champions league, which is divided into group stage, knockout phase and final match. In group phase, 32 teams are drawn into 8 groups of 4 teams and play each other in a double round-robin system. Teams with the same points in the group stage determine the group ranking in the order of the win-loss relationship, the number of goals and the number of away goals, and top 2 teams of each group proceed to knockout phase. The knockouts are played over two legs, and the final is a single match.