Since 20 14, 165438+ 10, 12, the validity of F 1 visa has been extended from the original 1 to five years, and students with certificates can enter and leave the United States multiple times during the validity period.

American visa F 1 is issued to full-time students studying in the United States, and there is no quota limit. With visa F 1, you can work on campus. If you want to work off campus, you need special approval.