On October 7，2021，the Polish Constitutional Court issued the ruling that some articles of the Treaty on European Union were incompatible with the Polish Constitution. This ruling directly challenges the EU legal order in which EU laws are above the national laws. The ruling of the Constitutional Court aggravated the political conflict in Poland，worsened the already tense relations between Poland and the European Union. The ruling of the Constitutional Court aims to create space for the Law and Justice Party to realize its political agenda without being restricted by the European Court of Justice and the European Union. The ruling of the Polish Constitutional Court has aggravated the worries about Polexit.