1. The better performance of the two teams;
2. The bigger the difference of goal difference between the two teams;
3. The visiting team scored more goals in the match between the two teams;
4. Teams with better goal difference in the group stage;
5. The team with the best total score;
6. According to the "ranking coefficient" of UEFA.
Qualifying rules for extended data group competition:
1, high integral;
2. If the points are the same, look at the winning relationship;
3. If the winning relationship is the same, look at the number of goals scored by the other side;
4. If it is the same, see who scores more goals away;
5. If they are the same, look at the total goal difference in the group match;
6. If it is the same, look at the total number of goals scored in the group stage;
7. If it's the same, look at the point of fair competition.
Rules for the knockout (including the final) qualifying tournament:
In the knockout stage (including the final), except for the championship battle for the neutral venue, the rest all adopt the home and away two-round knockout stage. In addition, there are only two awards in the Champions League, the champion and the runner-up, and there is no competition for the third place.
The quarterfinals are decided by drawing lots, but according to the following criteria:
The first group versus the second group; The same team and the team will not meet; The first leg will be played at the home of the second place in the group.
There will be lots in the quarter-finals and semi-finals, and there is no limit to this draw.
In the final, if the two sides play after the legal time of 90 minutes, they will enter 30-minute overtime. If the overtime is still tied, the winner will be decided by penalty.
The winner of the final is the champion of this season's Champions League, who can participate in the FIFA Club World Cup that year, as well as the European Super Cup and the Champions League group match next season.
Reference link: Baidu Encyclopedia-Champions League