What does the 10 year period of American immigrant visa mean?

It should refer to the 10 round-trip visa in the United States, not a kind of American immigrant visa.

The State Council announced that starting from June 20 1 14, China people's class B (business or tourism) visas can be valid for up to 10 years.

Australian and Shenzhen immigrants would like to remind you that the validity period of a visa and the period of legal residence in the United States are not the same concept.

The validity of the visa refers to how long it takes to go to the United States. For example, if the time limit given by the consulate is 10 year, then the holder of B1B2 can go to the United States at any time within 10 year. However, how long you can legally stay in the United States after arriving in the United States is not the decision of the visa officer, but the immigration officer at the border.

For class B visas, border immigration officials can grant legal residence for up to six months. Therefore, even if the visa is valid for 10 years, the legal stay in the United States will not exceed 6 months each time; You must leave the country before the expiration. The legal stay time is recorded on the I-94 card.