My girlfriend went to study in Los Angeles. If she gets a temporary green card, can she go back to China to marry me first and then get me there? What is the use of a temporary green card?

Get a temporary green card and get a permanent green card two years later.

According to the provisions of American immigration law, American citizens or permanent residents can apply for their spouses to come to the United States for permanent residence. According to American immigration law, a spouse is a legal couple. In order to successfully apply for an immigrant visa for a spouse, it is necessary to establish the relationship between the applicant and his spouse. It takes three stages for a spouse to become a legal immigrant: first, submit a spouse's immigration visa application to the immigration bureau; Judging from the time when the applicant applies for an immigrant visa, the number of spouse visas in the the State Council visa announcement shows that the applicant's spouse can obtain an immigrant visa; If the applicant's visa application is approved, he can get an immigrant visa number, and the State Council will inform the applicant's spouse to go through the immigration visa formalities at the local American consulate overseas. If the applicant's spouse has legally entered the United States when the visa application is approved, and can obtain the immigrant visa number, you can use the I-485 form to apply for adjusting the legal permanent resident status. If the applicant is an American citizen, once his/her spouse's immigration application is approved, he/she will be eligible for an immigration visa immediately. If the spouse was legally in the United States at that time, the applicant must fill in Form I- 130, and the spouse must fill in Form I-485. If your spouse is outside the United States, you can apply for an immigrant visa at an American embassy or consulate abroad. The State Council will inform the spouse of a legal permanent resident when his/her application for immigration is approved and a visa number can be obtained. If the spouse was outside the United States at that time, he must go through the visa formalities at the local American consulate. If the spouse legally enters the United States and has legal residence status at the time of notification, he can fill in the I-485 form when the visa number is available.