当AC米兰巅峰时期，是由于在最近几年里，AC米兰足球俱乐部在欧洲足坛上取得了令人惊叹的成就。他们在2018/19赛季中夺得了第一个意甲冠军，接着在2019/20赛季中取得了3项冠军，包括欧冠、意大利杯和意大利超级杯。

此外，AC米兰也在欧洲赛事中取得了优异的成绩，在2018/19赛季欧冠小组赛中，他们以6胜2平的成绩获得小组第一，而在欧冠半决赛中，他们以2比1的比分击败了当时的英超冠军曼城队，成功晋级决赛，最终以1比0的比分击败波尔图夺得欧冠冠军。

The peak of AC Milan came as the club had achieved some incredible accomplishments in European football in the recent years. They had won the first Serie A title in the 2018/19 season， followed by a treble in the 2019/20 season including the UEFA Champions League， Coppa Italia and Supercoppa Italiana.

In addition， AC Milan had also performed well in European competitions， topping the UEFA Champions League group stage with a record of 6 wins and 2 draws in the 2018/19 season. In the semi-final of the same season， they had beaten the then Premier League champions Manchester City by 2-1 to reach the final， and eventually won the title by beating Porto 1-0.