The Champions League will enter the knockout stage in the form of drawing lots, and it will be decided whether to play against both sides or to be the first in the group stage against the second in other groups.

The 32 teams are divided into 4 files, with 8 teams in each file. The club's points ranking in UEFA determines which level the team belongs to in the draw. Divided into 8 groups by drawing lots, each group has a team in 1, 2, 3 and 4 files, the top two in each group enter the knockout stage, and the third one joins the UEFA Cup competition system.

The qualifying team was caught by the draw in the host-guest knockout match of 16+8. The principle of the lottery is: the teams in the first group play against the second teams in different groups, and the clubs in the same country cannot meet, so the first team in the group plays away first.

The form of the top 8 teams will be decided by free drawing, and there is no restriction. The same country or the same group may meet. After the draw, the team's promotion route will be decided, and it will be divided into two and a half areas, and each half area will produce a final team, 1/4 finals, both at home and away in the semi-finals. The final will be held in the stadium decided by UEFA in advance, and a game will decide the outcome.