这个完全取决于国家,欧洲没有进行统一的协调,欧洲内部现在也有入境限制,而且也经常需要隔离。你这里涉及奥地利和匈牙利。按照奥地利的说明,ENTRY RESTRICTIONSAustria currently bans the entry of all travelers arriving from outside the European Union (or the EEA, Switzerland, Andorra, Monaco, San Marino, the Vatican, United Kingdom, or other low risk countries and territories listed in Annex A of the COVID-19 Entry Regulation) to reduce the spread of COVID-19. The entry ban includes travelers arriving from the United States.Exceptions apply inter alia for:Austrian, EU, EEA, Swiss and UK citizens and persons living in the same householdHolders of a D visa or residence permit issued by Austria Persons with a residence in Austria (i.e. holders of a "Meldezettel"), the EU, EEA, or Andorra, Monaco, San Marino, the Vatican, Switzerland or the UK and persons living in the same householdHolders of a diplomatic “legitimation card” issued by AustriaBusiness travelers (entry for professional reasons), including sport professionals and artists)Students and researchers所以你能不能进入奥地利你要先自己确定。如果可以也需要填写一个声明表格,然后在此基础上除了部分国家以外,都需要进行10天隔离(中国不在其列,所以也需要隔离)。当然你还要转车,这个我不确定,建议你自行查阅。之后你要进入匈牙利,匈牙利的网站我没找到,你得自己再去找一下。