What should I do if the American immigration interview is rejected? Can I continue to apply?

Yes-if it's just a simple "refusal", then in theory, you can reapply immediately after the visa is rejected.

But at the same time, we should also find out the reasons for rejection. There are many reasons for the rejection of immigrants. Common situations can be divided into two categories: one is that there is insufficient materials, so you can go back and continue to fill in the materials, and then you can apply for an interview to continue your application; The other is to find that the content of the material is untrue and suspected of fraud. In the latter case, restrictions are usually imposed after rejection, and applications cannot be continued for a certain period of time.