忽悠网是这么说的 Q: Is there a maximum number of days that an Alien can stay outside the U.S. while on AP? A: The only limit to the amount of time is the one-year expiration date on the AP. The year period begins from the date the AP is issued. You cannot use the AP after it expires. - See more at: http://www.hooyou.com/advanceparole/faq.html#sthash.8E0jr7hY.dpuf 这是比较老的回答,当时可能没有2年AP