At first, this article introduces three theoretical frames: Universal Grammar, Cognitive Psychology and Sociocultural Theory. Then, we find the interface between these three frames and second language acquisition studies. We claim that if we do second language acquisition research on the basis of these theoretical frames, it will get more persuasive. At last, this article takes a research of Chinese resultatives under the framework of Universal Grammar as an example, and shows me- thod and procedure of second language acquisition studies. We hope this article can help the fol- lowing studies get their thoughts into shape and raise the level of theory.