How long does it take to get married in the United States and then return to China to wait for an American green card?

What's his status?

If you are a citizen, you can wait for about one year to apply for the approval of American immigration.

If it is a green card, you should keep your legal status in the United States while waiting for the application for immigration.

In other words, what visa did you get to go to the United States? You must keep this state for about three years.

The timetable for applying for spouse's green card is about three years.

If you can't stay, you must go back to China and wait for the schedule.

Once hacked, you won't pass the immigration interview in the future.

Besides, you must leave the country. Once you leave the country, you will be punished for not entering the country for ten years.

If your spouse is not in these two identities,

Then your marriage will not bring you any substantial help.