Rationalist paradigm is the dominate paradigms in the field of international conflict research. It is widely used in issues such as interstate conflict, civil war

and ethnic conflict. This paradigm focuses on the factors of bilateral interaction between actors, pays attention to the incomplete information, unreliable commitment and issue indivisibility in the bargaining process before the conflict occurs, and explains the failure of bargaining and the occurrence of conflict, thus shaping the research orientation of conflict research with information and commitment as the core. By studying the bargaining process in the shadow of conflict, the rationalist paradigm surpasses the differences in the nature of the disputed issues and emphasizes the interactive nature of national interests, so it has universal significance in interpreting the occurrence of conflict. Rationalist paradigm can be seen as the result of the evolution of conflict research paradigm, which has strong expansibility and operability, and provides feasible ideas for the innovation of middlelevel theory in other fields of IR. As far as the construction of theory itself is concerned, the theorization is relatively high, and the conceptual indicators and logical deduction are clear and concise. Thus it can provide a reference for Chinas theoretical innovation in international relations, that is, empirically observing and innovating concepts while paying attention to the logic and methodology of theory, so that theoretical innovation has more universal practical significance and profound academic value.