Second entry into the United States interval

There is no explicit limit on this.

However, frequent entry and exit is not allowed. In this case, you may be strictly questioned when entering with a visa, and may even be considered to have immigration tendencies.

The period of stay in the United States within another year cannot exceed the period of stay in the country.

The longer the last stay in the United States, the longer the interval required before the next entry.

For example, it is okay to go to the United States for one month, stay in China for one month after returning to China, and then go to the United States. It won’t work the second time, and it will take a longer period of time.