How long is the validity of American tourist visa?

The validity period of the US visa is as follows:

1. business tourist visa for visiting relatives: the validity period of the business tourist visa for the United States is one year from the date of obtaining the visa, and it can be returned multiple times within one year.

2. Study visa: The validity period of the American class F study visa is one year.

3. Work visa: The work visa is generally valid for 3 years and can be extended once. The validity of other seasonal labor visas depends on the needs.

4. Special talent visa: Generally, the O visa is valid for one year and can be extended once a year.